Forum Replies Created

Page 72 of 105
  • MarkBroussard

    Professional Chemist / Formulator
    July 19, 2017 at 5:15 pm in reply to: Help! Problem with Ceteareth 25

    I see … a general comment.  So, Benzyl Alcohol + Dehydroacetic Acid would work just fine in this formula.

  • MarkBroussard

    Professional Chemist / Formulator
    July 19, 2017 at 2:34 pm in reply to: Help! Problem with Ceteareth 25

    And what salts do you see in this formula?

  • MarkBroussard

    Professional Chemist / Formulator
    July 19, 2017 at 12:38 pm in reply to: Help! Problem with Ceteareth 25

    You might want to try Benzyl Alcohol + Dehydroacetic Acid … it’s a well-established, commercially available blend … use at 1% and you should be fine.

  • MarkBroussard

    Professional Chemist / Formulator
    July 18, 2017 at 2:05 am in reply to: How would I calculate amount by weight, of a powder in a liquid

    Yes, measure out 8oz of milk and weigh it.

  • MarkBroussard

    Professional Chemist / Formulator
    July 17, 2017 at 12:23 pm in reply to: peel off mask

    15% PVA and 10% Ethanol is quite typical for these formulations.  

    What is the purpose of including Polysorbate and Propylene Glycol in this formulation …

    And, what are you expecting this product to do other than dry and peel off the skin … you don’t have any “skin actives” included.

  • MarkBroussard

    Professional Chemist / Formulator
    July 14, 2017 at 2:17 am in reply to: Help! Problem with Ceteareth 25

    I have not ever worked on a formula like this, so I can’t offer any more advice.  Is this a formula you developed on your own, or are you trying to replicate a formula you found fully-developed from a formulary?

  • MarkBroussard

    Professional Chemist / Formulator
    July 13, 2017 at 9:03 pm in reply to: Help! Problem with Ceteareth 25

    It would help if you posted the full LOI of the benchmark formula.

  • MarkBroussard

    Professional Chemist / Formulator
    July 13, 2017 at 2:54 am in reply to: Help! Problem with Ceteareth 25

    Couple of issues:

    (1)  C-25 … 21% … is that correct or did you mean 2.1%?  If 21% is correct, then that’s the major part of your problem … you only need about 2% C-25

    (2)  Temp = 60C … trying upping your temperature to 70C to 75C.

    But, if you are using 21% C-25, that’s your problem.

  • MarkBroussard

    Professional Chemist / Formulator
    July 12, 2017 at 1:06 pm in reply to: Cold Process Emulsion

    I have not used Speineo P600 … looks interesting.

    I have used Sucrose Stearates (Sisterna), Hydresia Oleosomes (Botaneco), Sucragel (Alfa).  

    Hydresia Oleosomes need to be combined with another emulsifier (either Sucragel or Sucrose Stearates) … If used solo, you always get separation.

    The issue is the sensorial which not really a cream feel, but more like a serum. Also, the emulsions using these cold process emulsifiers are water-thin.

    All-in-all, my clients have liked the products developed using these emulsifiers.

  • MarkBroussard

    Professional Chemist / Formulator
    July 10, 2017 at 2:00 am in reply to: Advice on moving on from contract jobs to become a full time employee

    Here’s another thought:

    Formulate a couple of surfactant products and a couple of creams/lotions … your own creations … test them thoroughly and make sure they are commercial quality prototypes.  Bring your prototypes with you to your interviews, leave them behind as drop-offs, but preferably, have the interviewer (assuming it’s technical staff) sample them.  Prove to the prospective employer that you can develop these products on your own in addition to selling your three-years of diverse contractor experience.

    That will certainly set you apart from the other applicants for the job.

  • MarkBroussard

    Professional Chemist / Formulator
    July 10, 2017 at 1:44 am in reply to: Advice on moving on from contract jobs to become a full time employee

    I think this may be your disconnect.  When you are asking for a base pay of $50 to $55 K as a full-time employee, the company will also have to gross-up that pay level to include benefits, so the net cost to the company to hire you full-time may be on the order of $65 to $75K.  I am assuming you are not earning $50K to $55K per year as a contractor?

    So, from the Company’s perspective they can train up and hire interns at starting salaries of perhaps $35 to $40K per year (I am just pulling numbers out of the air here, but just follow the logic) with a total gross-up cost of $50K per year including benefits.

    Have you done a salary survey to determine if what you are asking is market rate for your level of experience?  And, is it market rate for the types of jobs you are applying for at your level of experience?

    Is you contractor experience directly related to the types of jobs you are applying for?  If not, they’ll have to train you up and you’ll have to prove yourself in that job, so that’s an additional consideration.

    It’s always tough being a recent college grad in the job market.  Focus on the set of skills and experience you have gained in your contractor assignments and match them to the job you are apply for … is there a match between the employer’s requirements and your skill set?

    You have to sell yourself to the prospective employer that you can do the job and add value to their organization and that you bring directly relevant experience to the table.  You have to nail that down first before getting to salary negotiations, but you need to know your market value going in to negotiate effectively.

    Often times you are more valuable to someone else than you are to your current employer.  It sounds like you need a mentor/recruiter to help you determine your market value … someone with knowledge of the salary structure within the industry.

  • MarkBroussard

    Professional Chemist / Formulator
    July 7, 2017 at 12:58 pm in reply to: Olivem 1000 rub-in issue

    @manuksh:

    Yes, that is correct

  • MarkBroussard

    Professional Chemist / Formulator
    July 7, 2017 at 12:09 pm in reply to: Olivem 1000 rub-in issue

    @christopher:

    Yes, I have used RitaMulse solo, but my favorite is the combination of RitaMulse/Olivem1000/Isoamyl Laurate … if you’re familiar with the Molton Brown lotions, you get a very similar sensorial.

    RitaMulse solo is easier to work with than Olivem1000 solo is my experience.

  • MarkBroussard

    Professional Chemist / Formulator
    July 7, 2017 at 1:20 am in reply to: Olivem 1000 rub-in issue

    Olivem 1000 yields the most stable emulsions with 2% Glyceryl Stearate, 0.3% Xanthan Gum and as @Belassi pointed out either Cetearyl Alcohol or Cetyl Alcohol will help reduce soaping.  Follow @DRBOB@VERDIENT.BIZ’s advice regarding Dimethicone or use Isoamyl Laurate if you want a natural alternative.

    I generally combine Olivem 1000 with RitaMulse and Isoamyl Laurate and it produces really nice, light emulsions with no soaping.

  • MarkBroussard

    Professional Chemist / Formulator
    July 5, 2017 at 7:37 pm in reply to: Probiotics in skin care - what is your opinion?

    I have no idea, but I think a company that makes drug claims on a cosmetic product has absolutely no credibility and I would not trust anything they say.

  • MarkBroussard

    Professional Chemist / Formulator
    July 5, 2017 at 6:14 pm in reply to: Probiotics in skin care - what is your opinion?

    Here’s the other issue … the most common species found on human skin microbiome are:

    • Staphylococcus
    • Micrococcus
    • Corynebacterium
    • Brevibacterium
    • Dermabacter
    • Malasezzia

    Note that the bacteria in this product are primarily found in the human gut, not on the skin.  So, if you wanted a product that would be effective on the skin, why would you use gut probiotic bacteria instead of skin microbiome bacteria?  The skin and gut are completely different environments.

  • MarkBroussard

    Professional Chemist / Formulator
    July 5, 2017 at 5:35 pm in reply to: Probiotics in skin care - what is your opinion?

    Here’s the problem I have with product such as this.  Note the sleight of hand in the language … essentially claiming that their product is “ideal” for a variety of medical conditions “according to our customers”, but then stating that the statements have not been evaluated by the FDA and that the product is not intended to treat, cure or prevent any diseases.

    Our 12 strains of symbiotic probiotics spray can help the skin stay balnced, calmer and more resisitance to aging. * 

    According to our customers, this is ideal for people who suffer from rosacea, rashes, scrapes, cuts, staph-type infections, nose, eye or ear infections, athlete’s foot, jock itch, ringworm, and yeast infections.  

    LiviaOne Topical Probiotics can benefit as:

    • Protective Shield
    • Antimicrobial Properties
    • Calming Effect
    • Natural Skin Balance
    • Dental Caries
    • USDA Certified Organic - to assure quality and safety
    • Made in the USA to produce the best quality of product available
    • Multi-Strains includes: Lactobacillus Acidophilus, L. Rhamnous, L. Salivarius, L. Rhamnosus, L. Casei, L. Plantarum, Lactococcus Lactis and Casei; Bifidobacterium Infantis, Longum along with Streptococcus Thermophilus all in a enzyme enriched substrate.  
    Ingredients: Derived from a proprietary blend of probiotics in an enzyme-enriched substrate, water and a proprietary blend of 3 organic grasses.

    These statements has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any diseases.

  • MarkBroussard

    Professional Chemist / Formulator
    July 5, 2017 at 2:22 pm in reply to: Formulating for the Vagina

    Perhaps you missed this paragraph:

    And 44 percent of women who reported using intravaginal oils tested positive for Candida, the fungus that causes yeast infections, compared to 5 percent of women who did not use oils.

    On its website, the American College of Obstetricians and Gynecologists recommends that women who need lubricants during sexual activity use water soluble or silicone based products to prevent irritation or sensitivity; silicone-based products tend to be more slippery. ACOG also warns against using petroleum jelly, mineral oil or baby oil with condoms, since these products can cause the condom to break.

    When an “expert” completely ignores an entire class of product, water-based vaginal lubricants that do not contain parabens or glycerin, and instead recommends using oils … and, when those recommendations are counter to the ACOG recommendations, I just stop reading at that point.  BTW:  That “expert” was not a medical doctor, but a sex therapist trained in the psycho-emotional aspects of human sexuality.

  • MarkBroussard

    Professional Chemist / Formulator
    July 5, 2017 at 11:54 am in reply to: Fat/oil soluble Vitamin c

    It actually claims to be water and fat soluble.  I’ve found it to be soluble in neither to be honest.

  • MarkBroussard

    Professional Chemist / Formulator
    July 4, 2017 at 3:01 am in reply to: Stop loss conditioner design

    Saw Palmetto, Beta Sitosterol, Stinging Nettle

  • MarkBroussard

    Professional Chemist / Formulator
    July 2, 2017 at 5:33 pm in reply to: Stop loss conditioner design

    I see … there are some others you might want to consider, but this might be a moot point given the age of this thread

  • MarkBroussard

    Professional Chemist / Formulator
    July 2, 2017 at 1:07 pm in reply to: Stop loss conditioner design

    Even though this is an old thread … @belassi:  you don’t seem to have any alpha-5 reductase inhibitors in your formula, which is the key to reducing hair loss.

  • MarkBroussard

    Professional Chemist / Formulator
    July 2, 2017 at 1:05 pm in reply to: question about overhead stirrer

    @czhang:

    This is as good as any other overhead stirrer on the market.  It will serve your purposes well.

  • MarkBroussard

    Professional Chemist / Formulator
    July 1, 2017 at 11:42 am in reply to: Formulating for the Vagina

    Ask yourself a simple question:

    Does the vaginal cavity naturally contain oils?  No.

    Is the vaginal cavity a naturally aqueous environment?  Yes.

  • MarkBroussard

    Professional Chemist / Formulator
    July 1, 2017 at 11:05 am in reply to: Formulating for the Vagina

    Here’s why … because approximately 45% of women who use oils in their vagina end up getting infections.

    http://www.nbcnews.com/health/health-news/some-popular-vaginal-products-linked-infections-study-finds-f1C8978663

    Your “expert” Dr. Opinion recommended using Coconut Oil (really bad idea) as opposed to water-based vaginal lubricants because she claims they contain Parabens (“and we know Parabens cause cancer” - that is not proven) and Glycerin … She’s presuming that all water-based vaginal lubricants contain Parabens and Glycerin which is clearly not true.  In short, she’s ill informed.

    The NIH study was using encapsulated coconut oil as a carrier for drug delivery … dramatically different that putting Coconut Oil in your vagina as a lubricant.

    Not all women have issues with using oils in the vaginal area, but approximately 50% do get infections from using oil-based products.  In developing a product for the market, an oil-based product is not a market risk I would take.

    Develop a glycerin and paragon-free lube and you address a much larger market segment with minimal issues.

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