This lesson introduces you to 8 science topics that are important in the cosmetic industry but are not usually covered in college course. It includes information about the following topics

  • Surfactants
  • Emulsions
  • Fatty Acids
  • Silicones
  • Polymers
  • Skin biology
  • Hair biology
  • Chemical Nomenclature

Download the slides

If you would like to download the slides, feel free to do so here.

When you’ve finished the lesson, please leave a comment and let us know what you think.

462 thoughts on “Cosmetic Science Mini-Course Lesson 2

  1. Avatar
    Chrysa says:

    I wonder-maybe a silly question-if a product applied on the skin, and on the skin there are hair of course, can that penetrate through the skin via the hairs’ pore?

  2. Avatar
    Perry says:

    @Chrysa – not a silly question at all. There is the potential for penetration at the hair follicle however it just hasn’t been demonstrated to happen to any appreciable amount.

  3. Avatar
    Marilyn Chan says:

    I really do appreciate your effort in sharing your time and knowledge of the industry. Nice lessons for start-up cosmetic chemists like myself. Keep up the good work.

  4. Avatar
    andrianto says:

    Yes, Perry. I do appreciate this lesson esp. for someone back to workforce from long hiatus..like me. Still waiting for the next lesson, and of course I’ll file this for my docs. I agree that the knowledge within this topics so huge and vast as science always develop and always being update like this lesson do is the answer.

  5. Avatar
    Rebekka says:

    Hi Perry, Thanks so much! I did have organic chemistry in College (making perms and such LOL), but still am far from being a cosmetic scientist. Your help is very much appreciated! I am just starting out with soaps and such, but one day I will own a SPA! Thanks again for helping me along with the first steps, long way to go!

  6. Avatar
    Perry says:

    Some noteworthy edits…
    There is a point in the video I say “hydrophobic” head. I meant to say “hydrophilic” head.
    At some point in the video I mix up the term silicon (the element) with silicone. It’s a pretty common error in the cosmetic industry to use them interchangeably. Most of the silicon-containing raw materials are silicone elastomers which are a class of polymers used as esthetic additives in skin and hair care products.

  7. Avatar
    Jessie Desrouleaux says:

    Great job. We can all benefit from it. I wish I could afford your course. I ‘d be intersted in the color cosmetics section. Most of the other sections, I’m already practicing on the job. I wish there were more like you when I was starting out.
    Thanks!

  8. Avatar
    Thembi Mtombeni says:

    Thanks Perry, you really take your time to fill in the gaps of college education. Thank you, Don’t you think they should revamp curricula to make it more useful in the real world of a cosmetic chemist?

    • Avatar
      Perry says:

      Well, that would be nice but universities are more focused on training future chemical researchers and less on training future applications chemists. I think a course in ‘Applied Chemistry’ should be part of the curriculum.

  9. Avatar
    Eliza says:

    You are my new inspiration, Perry 🙂 Thank you so much for sharing your knowledge so generously, I’m saving up for the course. I had a good laugh when I walked out for a cup of tea while leaving the video on and you started about ‘fatty acids’, cos when you’re not paying attention it sounds like something else entirely LOL

  10. Avatar
    mohammed hafez says:

    Valuable information and very, very great
    I am very excited to see Lesson No. 3
    I wish you progress and lasting success

  11. Avatar
    Susan says:

    With a decades old microbiology degree and an esthetician license, I am developing a very small line of skin care products. The information in these lessons is like hiring a good consultant. THANK YOU. I will sign up for your course when my finances allow. Please don’t give up on us…..you have a solid following out here.

  12. Avatar
    Mai Hoang says:

    OMG, when I was watching your video, I felt like I just found a big bag of gold on the street :), and I just wanna kiss you <3. Thank you so much for your effort and your time. You have no idea how much your information help us (or at least me). I'm looking forward to 3rd video, and will enroll in your course any time soon. You're the best.

  13. Avatar
    Kevin Katechis says:

    Perry, very good video. However, there are some actives and transdermal penetration enhancers called TPCs (such as liposomes) that do penetrate the epidermis which are in OTC products today. As you know, if you make the claim that it penetrates the skin then the FDA considers it to be a drug and such claims are forbidden. I think it is important for chemists leaning towards the cosmeceutical track to understand this difference. I understand that this may be a little deeper than the scope you are targeting for your courses but should be mentioned don’t you think?

    • Avatar
      Perry says:

      Good addition Kevin. I think the key is that cosmetics are not supposed to interact with the skin (or body) in the same way that OTC are allowed.

  14. Avatar
    Laura says:

    Nice video. A good overview of the main ingredients in cosmetics. I wasn’t able to find a better explaination of these topics anywhere else online. Thanks so much.

  15. Avatar
    Maya Devi says:

    Hello Perry! Wonderful video, again! I’m learning about cosmetics as I work in chemical trading that wants to expand our business to cosmetic ingredient. My background myself is actually a food technologist.
    Your video makes it simple and understandable.
    I have a question: surfactant, fatty acids, polymers, and silicones can act as a conditioning agent. How do a cosmetic chemists determine which one to use or which combination to use in their formula?

  16. Avatar
    Zenith Czora says:

    Nice presentation, some questions on surfactants and preservatives:
    1. Does the cosmetic industry uses the ethoxylated type of surfactant?
    2. On preservative, is there any preservative that are not formaldehyde base or formaldehyde donors?

    • Avatar
      Perry says:

      Hello Zenith – Thanks for the kind words.
      1. Yes, the cosmetic industry uses ethoxylated surfactants (e.g. Sodium Laureth Sulfate)
      2. Yes, there are parabens, organics, salts, alcohols, etc. See this post about preservatives.

  17. Avatar
    Christine says:

    As a newby with no chemistry background, this has been an excellent presentation and acts as a short cut of knowledge. I am working on an organic, natural range of hair and body care products. I am self taught, but on the verge of taking some short private classes. I am aware of some of the contents in this video, however, you have brought them together very nicely giving a clearer understanding. You are a fantastic tutor, and I look forward to lesson 3.

  18. Avatar
    Cassidee says:

    it’s great that you’re doing this because it makes me way less hesitant to enroll in the course itself. If this is just the mini course with good info, good pictures, good lectures, I’m sure the full course is the same and more. thanks!

  19. Avatar
    Pat says:

    Hi Perry,
    This mini series was done very well. I am glad that Ifound out about Chemist Corner. I look forward to receiving more and enrolling in your course.
    Thanks Pat

  20. Avatar
    Corey says:

    Hi Perry,
    I would like to introduce myself, my name is Corey, I have a B.S. in Chemistry, and several years experience in both the consumer product and chemical industries. I have recently taken a regulatory affairs position for a designer/distributer of children’s and teen cosmetics. I have found your website to be very helpful while learning to navigate the world of cosmetic chemistry, and would like to say thank you for the great resource you are providing. Cheers!
    ~Corey

  21. Avatar
    Emma says:

    I think this lesson is more about biology. Overall, great video for knowing the applications of different ingredients used in the cosmetics.

  22. Avatar
    Ayana says:

    Thank you sooo much! But I just noticed something. In the first part (surfactants), you said hydrophobic instead of hydrophilic. Hihi. But seriously, thank you for this! Learning a lot! Can’t wait for the next parts 🙂

  23. Avatar
    Roza says:

    thank u! was really interesting 🙂 specially the chemical names called by it’s trade name. Do u know where i can find at least some important or common cosmetic chamicals trade names and structure? thank u again!

  24. Avatar
    aram says:

    thank you very much perry, it was a brief and useful review of your book. I wish, I could be there in US to benefit from your complete training program.

  25. Avatar
    Pamela says:

    Thank you for the great course! I recently signed up, and am amazed by the value in the course content. Thank you so much for providing this stellar service.
    Pamela

  26. Avatar
    Wanda says:

    What an informative lesson! I am so glad you are doing this because it is nearly impossible to find information like this that actually relates to cosmetics rather than just chemistry or biology in general. Looking forward to the next lesson.

  27. Avatar
    Manoranjan says:

    Hi Perry,
    It’s very much informative and hope to learn more. Thank you very much for your great lessons. I really appreciate your efforts.
    Good luck.

  28. Avatar
    Nataly says:

    It’s a very general introduction but I must admit I did learn some new things and it refreshed my memory on things I did know.
    Looking forward for a next lesson.
    Thanks a lot.

  29. Avatar
    Kelly says:

    Thank you. Very informative. As an Aesthetician, it is always helpful to have a deeper understanding of the chemicals that I am using and their applied benefits.

  30. Avatar
    rose says:

    when I found this site from the first time I knew that I am in the right place. thanks a lot. but I have a question, if the hair is a dead tissue that is mean that all hair products won’t be useful and there is no need for them especially that you can use a hair mask from a big company to treat hair problems like breakage , dullness, split ends but it didn’t make anything at all. and all stuff that used in shampoo like panthenol, herbal infusions or extracts & oils won’t repair any hair problems. is this true ?
    rose

    • Avatar
      Perry says:

      Well, products for hair are useful because even though hair is dead tissue, it still can get dirty and your body creates oil that gets absorbed onto the hair. But when companies say things are put in hair to help the “health” they are exaggerating. Think of hair like your shoelaces or clothes. You wash them but you can’t make them more healthy.

  31. Avatar
    rose says:

    I meant that there is no need to put panthenol or oils to hair because they won’t make it healthier or treat it or make shiner , so the usage for all hair products is just to clean the hair !

  32. Avatar
    lorena says:

    Perry:
    thank you very much, it was a great presentation, I really enjoyed it. I am an undergraduate chemistry student and I am interested in nanotechnology and cosmetics. I´ve heard about nanocosmetics and I was wondering whether there was some course, etc. I could take to learn more about it.
    Keep up the good work!!!!
    Best wishes

  33. Avatar
    Anita says:

    Thank you so much for all the information that you share with the rest of us. J am looking forward to part 3.
    One question, if you have time to answer it;
    I thought that the element building up silicone was Silisium. Is that wrong?
    Again; thank you for all your information
    Anita.

      • Avatar
        Alexandra says:

        Well, I think Anita misspelled the word here. Silicium is the latin name for Silicon. Accordingly, to say Silicium is building up silicone will be as correct as saying that so does silicon.
        Both of you are right. 🙂
        PS. The course is great for begginers. I’ve learned all of this at University.

  34. Avatar
    Linda Crenshaw says:

    I learn a lot about. Hair question, the healthy hair you explan is underneath the epidermis and not seen? Why when it comes out of the head it is consider dead cells when it beautiful and look healthy?, organic mixtures question: do all the entire list under the organic is used instead of chemical for product such as hand lotion etc? This is so interesting.

    • Avatar
      Perry says:

      Hair looks beautiful in the same way that a silk scarf or a tailored suit looks beautiful. Silk fibers and cotton fibers are not alive, neither are hair fibers.

  35. Avatar
    M.Nadeen says:

    My 2nd thanks and appreciation to you for the 2nd lesson. Its a great contribution to the phrase that knowledge does decrease when given, it increases. Now I am very keenly looking forward to Lesson-3 of this course.

  36. Avatar
    Linda Crenshaw says:

    I would like to know how I can get a chemist to help me with my idea’s. Or at least point me in the right direction. I took the lessen but I am not interest in a job just how to and knowledge of which I greatfully received. Can you tell help me please?

  37. Avatar
    Cheryl says:

    Perry,
    I really enjoyed Lesson 2. Just as lesson 1, your lesson plans are well thought out making the transference of knowledge easy. Your delivery of the message that there is a lot more involved in formulating products than most people realize is not intimidating, but very educational. I am looking forward to Lesson 3. I purchased your book, Beginning Cosmetic Chemistry and have started reading it. I must admit, it is difficult not to jump around and read specific chapters that peak my interest. It really is an awesome book. My formulas are based on natural ingredients and I am looking forward to taking your Natural Formula Course. Of course, I am using preservatives in my formulas. Hope you have a nice weekend.

  38. Avatar
    Courtney says:

    Great presentation! It was thorough and very easy to understand. I love your presentations and reports. I learn a lot and it’s obvious that you enjoy teaching and you have a knack for it. However, in the beginning you said that the head of a surfactant molecule is “hydrophobic” instead of “hydrophilic”. Keep up the good work and I can’t wait for the third presentation!!! Thanks for putting these together!

  39. Avatar
    Kingsley Kesiie says:

    Listening to this 2nd lesson is really peaking my interest in this cosmetic industry. All I have is high school chemistry but following you is tickling me well well. I plan to get involved in the antiperspirant deodorant industry as an enterpreneur. Hopefully, I will make friends with a formulator at this forum who can be of assistance, even if I cannot do things all by myself. What a great flair for impartation of knowledge!

  40. Avatar
    Kate says:

    Hi Perry
    That was totally great! Thanks, btw, for making slides available as a PDF. I’m more of an IUPAC kind of girl with oil lab experience and a bunch of books buried in a sea can. So that list is now saved. There is a lot to know about chemistry, and you can’t possibly remember it all- well I can’t! You get familiar with the things you work with every day and start forgetting the stuff you don’t use so thanks for that. I see what I need to learn and also what I need to review or re-learn, as the case may be. I would recommend to those who can’t take the paid course or who have no background but possess a keen interest to pick up a copy of “Milady’s Standard Textbook of Cosmetology” or a similar beauty school textbook. It discusses everything you did but in greater detail. I still have mine from hair school and I intend to review it. Thanks again!

  41. Avatar
    Cindy says:

    Dear Perry
    Thanks for the chemistry lesson which reminds me of old school days when I had my chemistry classes. Although I do not have intention to become a chemist, I find it extremely good knowledge to get a foothold of the industry. I am very glad to have stumbled upon your website.

  42. Avatar
    Maria Dela Cruz says:

    This is a great course for people who would like to be a formulator in the industry. Thanks for sending us an informative course like this.
    Maria

  43. Avatar
    mo says:

    Hi, Perry
    I believe those they want to become cosmetic chemist they should follow these lectures seriously and in mean time these well arranged presentation are a short review for those they already know the basic principle of cosmetic chemistry.

  44. Avatar
    wael says:

    your coarse is very useful & help me more,
    Although my knowledge in cosmetic is somewhat is good,
    but i learned more from your minicoarses

  45. Avatar
    Efi says:

    Thank you Perry for these free mini courses. A lot of information gathered together in good order. A very usefull tool for the beginners, since, as you said, very little information about these molecules is given in the University. When I started working in the cosmetic industry a few years ago, I found it very difficult to understand what to do with all these raw materials!! I am also very glad to have stumbled upon your website and I will keep following your work and your articles. Unfortunately, not many people are so generous to share their knowledge.

  46. Avatar
    Sheng-Sung Yu says:

    I truly learned from the lesson because there are many aspects in cosmetic science that I didn’t know. I have heard those terms in college but I have never learned the application to cosmetic products.

  47. Avatar
    Jessica says:

    wow I was really surprised to learn that the IUPAC format of nomenclature is not used in cosmetic chemistry, very insightful video.

  48. Avatar
    Rabia says:

    Hello sir!
    your this information is very useful…
    u deliver the lecture in very effective way and its easy to understand everything..thanks

  49. Avatar
    Irma says:

    Hello Perry,
    Ten stars for you Perry, great summary,very useful info.Thanks again for sharing your expertise.
    I am looking forward to the next lesson.

  50. Avatar
    Ghassan says:

    Thank you for this information Mr. Perry, but I have wondered if allowed:
    1 – Is it possible to get a file documenting this information with percentages allowed for each material used in combination?
    2 – Can I squint chemically sodium silicate to (a) the simplest possible way so as not to provide this silicon in my country now?

  51. Avatar
    R M Hegde says:

    Thank you, very simple to understand.
    Sir, i am developing a simple face wash with SLES, Carbomer, Glycerine , PG, Aloevera,MPS.PPS and TEA as neutraliser. pH- 7. 0 to 8.0
    Iam facing the problem that when neutralized the gel, excess air bubbles will be trapped in side . Pl. suggest any changes or method or any equipment to remove the excess air bubbles from the gel. Pl. suggest which is better for for face gel- SLES or SLS
    With regards and thanks,
    R M Hegde

  52. Avatar
    Gill says:

    Hi Perry,
    Another great summary, again with very useful information. Thanks for sharing your expertise.
    I am looking forward to seeing the next lesson!

  53. Avatar
    Jeannette says:

    Hi Perry,
    Thank you for the information that you provide. It is very useful and easy to understand especially for myself as I am a beginner and have lots to still learn. I am looking forward to course 3. Once again thank you!

  54. Avatar
    Alya says:

    it was useful,but I guess I need more regarding the nomenclature part,I guess I’m going to buy the INCI 🙂 .

  55. Avatar
    Nelly says:

    Thank You Perry for this insightful information. I’ve learned a lot from this lesson just as much from lesson one. You are a great tutor. Please keep it going.

  56. Avatar
    yohan says:

    Hi Perry, It was a good information for me. I am looking forward to part 3. Anyway do you have any fixed formula for cosmetic (skin care, hair care, lotion etc) for testing ?

  57. Avatar
    Eng. Nabil Mijahed says:

    Tghank you for the free informations
    Realy you are professional in this feild
    Appreciate highly your lesson 2
    Best regards
    Nabil Mijahed

  58. Avatar
    eucalypta says:

    I wonder what the target group is, that you’re aiming at.
    As far as I know, the major part of the presentation should be basic knowledge for those who have chosen science in (European) highschool.
    But it may be a good refreshment course and the nomenclature overview is a handy flashcard.

    • Avatar
      Perry Romanowski says:

      Most people coming out of college do not get exposed to this information about the primary ingredients in cosmetic products. You would be surprised at how unprepared people can be.

  59. Avatar
    Solange Peretti says:

    If I watched your videos before start to work developing products, I probably didn’t suffered to know this things… anyway, now I can tell you , this is a good way to let , students in college that intend to follow a cosmetic career, know and feel a little bit more familiar with the ingredients.

  60. Avatar
    Kallia says:

    Great mini course. I am a chemist and your lesson directs me in to which topics do I have to give more emphasis in order to be a cosmetic chemist. I am looking forward for lesson 3

  61. Avatar
    Ashley says:

    Around 1:54 you state that the surfactant molecule has a hydrophobic head but the screen shows hydrophilic head so I think that was what you meant to say. Otherwise, great lesson!

  62. Avatar
    Maria Miller says:

    Thank you soooo much! I am new to the industry and the information you presented in the video are the things that needed to know. Thanks for pointing out the things that i need to commit to memory also. very helpful.
    Maria

  63. Avatar
    sola says:

    Hi Perry, i cannot access and save this particular lesson 2, It’§ showing page not found, can it be corrected?. i really need this information. Thanks

  64. Avatar
    Chikondi says:

    Thanks for the mini revision and intro into the raw materials essential to cosmetic science. It is very practical, and specific to the industry. A review of my college notes is definitely necessary to get a reminder of the terms. And thanks for the power point slides too!

  65. Avatar
    Lynn says:

    Thanks for the info. I’m not a chemistry student, just a regular person! LOL
    Looks like I am in need of a cosmetic formulator in the Portland, Oregon area. Any suggestions?
    Thanks again

  66. Avatar
    Amanda de Nobrega says:

    Thank you very much for the lesson! I learn a lot from it, now will be easier for me to understand the practical.

  67. Avatar
    Qamar-ud-din says:

    It is very informative. keep it up. I really appreciate your efforts for equipping the chemists for an important industry in very interesting way

  68. Avatar
    vanessa says:

    WOW! THIS IS THE BEST EUCATION SINCE ELEMNTARY SCHOOL.
    THANK YOU, FOR YOUR GUIDANCE, LEADING THE WAY TO GROW AND CREATE SAFE PRODUCTS AS A COSMETIC CHEMIST.

  69. Avatar
    Martins says:

    This is interesting particularly the naming but there is no INCIDENT name for carbon 19 none for fatty acid and alcohol. Is the omission intentional or we are to find out what they might be? I like the way you are trying to wet our appetite. I did chemistry in my college study you are right some of this topics are not mentioned.
    Thanks you Perry.

    • Avatar
      Perry Romanowski says:

      C19 is not found in nature and is not really used in cosmetics so no one has bothered coming up with an INCI name. Probably would just use the IUPAC name.

  70. Avatar
    Jasmye says:

    Your video helps a lot! I learn that I didn’t misunderstand what this course is about.
    But, do u mind to share more on the career studying this course? And where can I get a jobs after graduating from this course?

    • Avatar
      Perry Romanowski says:

      I would suggest you look at our career articles (do a search for ‘career’ in the search bar). As far as where to get a job, I’d suggest you go through the SCC websites and look for listings.

  71. Avatar
    Lukman says:

    I thought studying chemistry is s waste of time. I think I now have a focus. U made it so simple to understand. Thank you so much.

  72. Avatar
    Noor says:

    Excellent Video. I have recently started a graduate role as a cosmetic chemist and I have to say that although I have done a Masters in Chemical Engineering, I am trying to grasp how to formulate cosmetic products. Its a lot more challenging than it seems especially because the environment is very fast paced and speed to market is very important with very little room for error. Anyhow, I am looking forward to your next video. I wish that you can give a more in-depth analysis of the various topics covered in this video. Do you know of any sources that I can go to for references? Thank you and Keep up the good work! The video was definitely great at clarifying key concepts in the cosmetic industry.

  73. Avatar
    JUDITH says:

    Perry,
    thank you for offering (free of charge) your mini lessons on Cosmetic Science! I have learned quite a bit of very valuable information as I begin the research phase of creating a line of branded cosmetics for our planned salons, which are about 2 years from launching! We want to learn as much as we can afford to pay for so that we choose the right company, ingredients, and formulations for our line! We are very excited and grateful to have found you and your website/blog…I can’t thank you enough for your graciousness in sharing your knowledge and expertise!

  74. Avatar
    Lakisha says:

    This is a great introduction, and I like that it is simple enough for most with basic chemistry knowledge to understand. I think it is wonderful what you do to help educate others. Looking forward to the course.

  75. Avatar
    Karen says:

    Great video! You explain things wonderfully and make it so easy to understand. You have me interested in chemistry and now want to explore and learn more. Thank You!

  76. Avatar
    Setty says:

    Great, very informative. Learned a lot of things about cosmetic science. Hope to hear more lessons about the cosmetic industry from you. Thanks

  77. Avatar
    Margaret says:

    I really liked this episode because I like chemistry. Took me back to my olden days in the classroom :). Good explanations of ingredients one uses when making cosmetics. Slides and illustrations were good.

  78. Avatar
    Leonard John says:

    Hi Perry,
    I found the lesson very informative and worthwhile, keep it up. however, I could not watch the videos for both lesson 1&2, it says ‘ File has invalid structure null’ please what do I do to watch the presentations?
    Thanks a lot

  79. Avatar
    pat says:

    Thankyou x3, i’m not a chemist…yet! but your methods of teaching go beyond, really appreciated your input on the hair segment, as usual keep up the good work!!

  80. Avatar
    Josephine says:

    Thanks Perry for your insightful video, very much appreciated as I am not a chemist but interested in making my own hair products.

  81. Avatar
    Monika says:

    Hello Perry,
    I really appreciate your classes. I am a former cosmetologist and I’ve been makeing my own skin care products for years now. Recently I decided I wanted to share my products with others and start selling it. Just didn’t know where to start. I’m so glad I found your website. It’s is absolutely wonderful. And again, I can’t wait for the lesson # 3. Thank you so much for all your work.
    Monika

  82. Avatar
    Marie says:

    very interesting video, i have learned a lot of information that I can translate to formulating my own products.
    Thanks for sharing your knowledge
    Marie

  83. Avatar
    Julie Berry says:

    I enjoy re-learning some of these things that I remember from College chemistry. I started with soap, and have moved onto lotions, creams, and anything bath & body. Understanding all the various ingredients and combining them is amazing.
    Looking forward to seeing what you show us next.
    Thank you

  84. Avatar
    catherine robinson says:

    I miss the first video but I love the second videothanks a lot for allowing me to learn science chemistry scienceCosmetics

  85. Avatar
    CAmyx says:

    Thanks for the informative video! I’m new to cosmetic science and enjoyed watching your video. The script and slides are helpful as I needed to go back to read and reference the notes. Thanks again!

  86. Avatar
    Daniel Segal says:

    Just a wonderful and effective lesson,
    You make Chemistry simple and easy for anyone to learn!
    Great job, and keep up the vids coming!

  87. Avatar
    DeAnn Jackson says:

    Thank you Perry for the very informative course! I will have to study that list, it will help me become a better esthetician! Thank you again!

  88. Avatar
    Shantelle says:

    wow, why was it never explained like this. i can really recommend his course. it is simple and direct. no unnecessary
    details.
    i am not a chemist, i have not chemistry background and i understood this.

  89. Avatar
    Negar says:

    Hi, Tnx a lot for this video, but unfortunately is interrupted in 2:47 suddenly, I try it severally but every time is stopped in 2:47, How should I do? 🙁
    Negar

    • Avatar
      Perry Romanowski says:

      Hello – Sorry Negar, I’m running the video right now and it works. I would suggest rebooting your system or try using a different web browser. I use Chrome and it works.

  90. Avatar
    Gloria says:

    I am an Account Executive in the cosmetic industry. This series of mini courses have been very informative. It has refreshed me to stay on top of the cutting edge of technology in the cosmetic industry.
    Thank you for sharing such valuable knowledge.
    Gloria

  91. Avatar
    kathy says:

    I love the video but it keeps on cutting off after about 7 minutes same with lesson 1
    Can you perhaps send another link. Thanks. Much appreciated.

  92. Avatar
    Lydia Naadu Tawiah says:

    Thank you for the tips,i watched the first and second video it was great, i can,t wait to join your online courses,am interested in all your courses,
    your,s
    regards
    from Lydia

  93. Avatar
    Efia says:

    Great information as usual. I like the fact that these videos are long enough to keep my attention, but short enough for me to process the information and look forward for more! Excellent.

  94. Avatar
    Anna says:

    thank you very much! this is very helpful for cosmetic production start-up companies as ours. kudos for the project!

  95. Avatar
    says:

    Such a wonderful sharing of knowledge. Thank you and i look forward to more cosmetics as well as household (i hope you’ll also discuss) general cleaning concern.
    Cheers!

  96. Avatar
    Carla says:

    The second presentation was super informative. The list of the chemical nomenclature was by far super helpful. I will really start looking into them. Thanks!

  97. Avatar
    raymond says:

    dear sir
    thanks for this interactive session am looking forward for your next tutorials i want to make a lotion that is less greasy and of 80% water content.

  98. Avatar
    Emily Chang says:

    Very informative and interesting. Thanks your sharing, Perry. It is very interesting. I look forward to receiving your next video.

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    Ching-Chung Tsai says:

    Very good lesson ! It help me to understand the ingredients name in cosmetic label.
    However please let me know where can I buy the dictionary of INCI and IUPAC.

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    Paige DeGarmo says:

    Super interesting video, especially the nomenclature part! I knew about a few of the ingredients from a food chemistry class that I took but I was really glad to learn about their application in cosmetics

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    Chiara says:

    I studied most of the mentioned topics in my degree course that was specific for pharmaceutical products. However, there is always something new to learn: I didn’t know about the INCI dictionary!

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    Tony says:

    Hey Perry,
    Thanks for posting such useful info , as a chemistry undergrad you continually remind me why I chose this field despite all the negative hype.
    Keep it up !!

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    olabowale says:

    Hi Perry,
    Thanks for the useful informations. You have really helped me understand so many confusing terminologies in the cosmetic industry, but i,ll still love to learn more.
    keep the lectures coming! Thanks .

  104. Avatar
    Choma Matale says:

    Hi again,
    Lesson 2 is fine especially for those who don’t have very little knowdge of chemistry. Thanks for making this information available.

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    Wilson Anomah Opoku says:

    Nice teaching and God bless you.
    Please l need your help here, l made a detergent with the following ingredients:
    Hypochlorite – 1kg
    Sodium carbonate – 1kg
    Sodium hydroxide – 1kg.
    34lter bucket 2
    But its not thick
    which ingredient can i add to make it thick?
    Thank you.

  106. Avatar
    Haryanto says:

    I really enjoy the video and learn a lot from you. I am trying to learn cosmetic chemical since I learn very little in the university.

  107. Avatar
    Manaza Mitha says:

    This was a very informative video that you put together for us. Thank you for helping me learn so much and enabling my learning in the industry. I look forward to future videos.
    Thank you Perry!

  108. Avatar
    Cathy says:

    Lesson 2 was great to watch, especially for those of us (me), who don’t have a very strong much chemistry background.
    Thank you.

  109. Avatar
    Louise Mynhardt says:

    Thanks Perry, I have learnt so much from all your courses, please don’t stop.
    I have a question: what is the difference between Empicol esb3 (sles28%) and Texapon NSO. I hope you can help me, thanks Louise

    • Avatar
      Perry Romanowski says:

      It’s just a difference in the amount of ethoxylation in the molecules. So Texapon has an average of 2 moles of EO per mole of lauryl sulfate. But when it comes down to it, you shouldn’t notice much difference in formulation.

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    Kiet says:

    Thank you so much for such a great overview. I really appreciate what you’re doing!!! Please Keep up the excellwent work.

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    Jackie says:

    Thank you for making this information available, especially the “Naming Cosmetic Compounds” table, but also information regarding skin and hair; very interesting.

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    Shawna says:

    These lessons have been great! Really interesting and laid out in a way that is totally comprehensible. I cannot wait to get to the next video. Thank you so much for the lessons!

  113. Avatar
    Oc Dat says:

    Hello to all
    Has anyone taken the online course? The complete course? Please share with me. I am curious about this course. Thank you so much!

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    Shally says:

    Hi Perry, Thank you for video. I am not scientist so difficult to understand science terms. I am interested to start make up production. Is that so what kind of scientist I need to hire especially in 2 way powders, make up, emulsion, make up removal, H2O facial water …Could you pls. advice? Note I live in Myanmar so nearest will be Thailand and if I do this business, I will hire Thai scientist. Thank you and look forward to you.

    • Avatar
      Perry Romanowski says:

      Hello Sally – You need to find a contract manufacturer to make your product. Or you can look for a cosmetic formulation consultant. Check the IFSCC website for chemists in your area.

  115. Avatar
    Robin Pennell says:

    The information was well presented and easy to understand. I am not a beginner. It would have been great to have this introduction years ago. Robin 🙂

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    Daniela says:

    Oh you cosmetic chemists not following the IUPAC rules and making everyone’s lives more difficult. Also, each time silicones are mentioned, I think about protecting group chemistry. But from now on, I’ll look at the ingredients in my primers more carefully. Keep up the good work!

  117. Avatar
    Tanya says:

    Once again a concise yet informative video to help those with a strong desire to move into cosmetic formulation . I’m looking forward to the rest of this mini series

  118. Avatar
    RITESH TRIBHUVAN says:

    Hi Perry, the information is really helpful and interesting. Iam into field of soaps & Cosmetics and would like to get more information on soaps as well specially syndet bar soap.

  119. Avatar
    BALSAM ALABASSI says:

    What I loved about this session is that it is done in simple terms with no information overload. Really well structured, thank you, Perry.

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    mehrozkalim says:

    hi,,
    please help me ,, how to reduce viscosity of face wash and which chemical should i add to make it clear and transparent.???

  121. Avatar
    Gaspard says:

    Thanks for these interesting courses. They help me having a better understanding on Cosmetics. If I would like to access to literature related to home made ORGANIC cosmetics, what would you recommend ?

  122. Avatar
    Vesna says:

    Thank you very much for sharing your expertise in cosmetic chemistry.
    I like how you summarized the key purpose of most common raw materials used in making cosmetic products. It is very thoughtful of you to remind us all of importance not to go beyond the skin surface when manufacturing cosmetics……let that be the part of work and science for more skilled professionals, like doctors and chemist working in pharmaceutical industry. Looking forward video #3

  123. Avatar
    Fatuma says:

    Thank you so much Perry, I was making my own beauty product for long time and I was thinking to take it to the next level. One day, I am looking forward to take your online practical lesson. Thanks again.

  124. Avatar
    Valence M says:

    The video stopped playing at 11:58, and i don’t why? I can’t move on to the next lesson without knowing the remaining information contained in more or less 10 minutes of the lesson. Help me fix the glitch.

  125. Avatar
    Marile Hanson says:

    Great video as always. This is definitely a nose dive crash course. I personally was able to keep up because of my knowledge from esthetician school thankfully. I loved the structure of the course, made it easier to follow.

  126. Avatar
    Helene Tsangaris says:

    Hi Perry, I really enjoyed seeing your second video which has so many interesting facts to learn and will be looking forward to seeing the next one.

  127. Avatar
    Olamide Olajide says:

    Thank you for the presentation. Like the first video, this one too is very informative. Looking forward to taking the course.

  128. Avatar
    Rashmi Saxena Pal says:

    Being a pharmacy proffessional,I m aware of most of the terms,but the video is extremely helpful in quick revision of all these essentials.

  129. Avatar
    Joyce Bonner says:

    Hi Perry,
    Could not view the vide as it did not come up, only had a black screen, same thing with the first video. I did read the transcript though and the information was informative. I am not a chemist and not in the field, I have been making beauty/hair products and I am so interested in gaining all the knowledge I can. I really enjoy the chemist corner although it is geared more for the professional chemist their are some trid bits I can take away, so thanks for all you do

  130. Avatar
    ross says:

    Hi Perry,
    Thanks for the video. It’s very helpful. I totally agree with you about what we study was not same as we working especially INCI name IUPAC name. 🙂

  131. Avatar
    Carol says:

    Hi Perry, thanks a lot for the video. And you are right; a lot of this is not cover in college. I have a question, I am having trouble with the whole ¨no silicon’s¨ in shampoo. You know with all the claims now and internet bloggers is hard to know what is what. So my question is: Are silicon’s that bad for hair?. And if they are, how can I make my shampoo experience better for my consumers? (specially in Shampoo 2 in 1).

  132. Avatar
    Ben says:

    Thank you for the presentation Perry, I really do appreciate your effort in sharing your time and knowledge of the cosmetic industry.

  133. Avatar
    Angelica says:

    I have enjoyed lesson 2 as well. Personally, I don’t have chemistry background, have been an aesthetician over 20yrs and thinking of retirement. Do you think I can learn fast enough to be able to formulate my own cosmetics for sale on the commercial market?

  134. Avatar
    Margit says:

    It’s been a long time since my last chemistry course, but your course makes it much more fun to pay attention to the material. I agree with the others who suggested including applied components in class. Linking it to something useful i.e. cosmetics–something we use every day–would keep more students awake in class. Great info. Thanks for sharing.

  135. Avatar
    seyfeddine says:

    Thank you for the presentation and the course Perry, I really do appreciate your effort in sharing your time and knowledge of the cosmetic industry.

  136. Avatar
    Laura Garcia says:

    Hi Perry,
    I want to thank you for the amazing, informative videos you make, there are so much important stuff, which is not being taught at college and now we all have the opportunity to learn it through your videos. Thanks so much!!!

  137. Avatar
    Nadia says:

    Perry,
    Thank you for this informative video. I specifically found the nomenclature portion to be very helpful.

  138. Avatar
    Kathryn Mazierski says:

    Hi There.. I respectfully submit a correction to the presentation. Keratinoctyes are generated within the Stratum Basale layer of the epidermis, not the dermis. These cells proliferate and differentiate as they make their way to the surface of the epidermis (stratum corneum). Their mission is to establish the skin barrier. While corneoctyes do not contain a nucleus, they are not actually dead in the classic sense. They become a critical component of cellular signaling from the outside to the inside, in order to form a competent barrier, preventing TEWL and the ingress of harmful substances. This is why penetration of certain actives through the stratum corneum can be a challenge. Cheers.

  139. Avatar
    Sarah Standish says:

    Thank you Perry. I especially enjoyed the INCI vs IUPAC section. After university, I rarely, if ever, have had to use the IUPAC system. Every industry has it’s niche way of naming things.

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