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  • Bobzchemist

    Member
    January 16, 2015 at 11:36 am in reply to: BenzeneSulfonic acid liquid soap thickness

    Just offhand, potassium oleate has worked quite well for me in the past to thicken clear liquid soap. It does restrict you to higher pH levels though.

  • Bobzchemist

    Member
    January 16, 2015 at 11:33 am in reply to: Does anyone remember the fluro zinc from the 90s?

    Personally, I’d mix a non-nano zinc oxide dispersion with petrolatum and call it good. I’d be afraid of using anything else in the formulation that the dog could lick off.

  • Good. You’ve narrowed down successfully. However, stick-form molded lipsticks are more complicated and expensive to make than lipgloss or lip balm, so be prepared. 

    You will need to do some ingredient and formulation research first, but my project suggestion for you is to identify a new/unique raw material that hasn’t been used in a lipstick before, and figure out how to use it in a lipstick base. Inventing an entirely new lipstick base formula, and then running it through the required safety testing, will take more time than you have. But - identifying and explaining the new base formulation and testing process should be part of your project. 
  • I’ve seen it more as some fragrance oils reduce viscosity more than others, but I haven’t kept records on it - there are too many variables. 

  • Bobzchemist

    Member
    January 15, 2015 at 10:29 am in reply to: BenzeneSulfonic acid liquid soap thickness

    All I can say is that I’ve never gotten anything like this to work.

  • Bobzchemist

    Member
    January 15, 2015 at 10:27 am in reply to: Manufacturing Cosmetics

    Can’t be done in any way that would produce even barely adequate products.

  • Bobzchemist

    Member
    January 15, 2015 at 10:26 am in reply to: benzalkonium chloride as laundry softener

    Can’t help, sorry. This forum is mainly for cosmetic chemistry.

  • Bobzchemist

    Member
    January 15, 2015 at 10:25 am in reply to: Storing Diluted Citric Acid

    Microbes is weird, so there’s no telling, but maybe it was mold?

  • Bobzchemist

    Member
    January 15, 2015 at 10:24 am in reply to: Interesting article by Specialchem

    Thanks!

  • Bobzchemist

    Member
    January 15, 2015 at 10:24 am in reply to: Starch acetate

    Go to the International Buyers Guide http://buyers.personalcarecouncil.org/jsp/BGSearchPage.jsp

  • There is nothing available because this can’t be done successfully.

  • I’m not sure what you’re asking for. What kind of cosmetics?

  • Bobzchemist

    Member
    January 15, 2015 at 10:20 am in reply to: Need help and advice asap on PL

    I wish you luck with that. What kind of budget do you have available to hire a consultant with?

  • Bobzchemist

    Member
    January 15, 2015 at 10:19 am in reply to: ***Nail Polish Formulating***

    Try looking in the industry magazine websites for a custom manufacturer. Nail polish is classified as extremely flammable, and some components are considered explosives, so specialized equipment is required.

  • Bobzchemist

    Member
    January 15, 2015 at 10:17 am in reply to: Seller & Buyer agreement

    There are no limits

  • Bobzchemist

    Member
    January 15, 2015 at 10:12 am in reply to: Shampoo with Camel Urine

    There were a few inside jokes sprinkled through the first edition of the CTFA dictionary. One of the guys who was on the committee to write it clued me in about some - my favorite was sodium gorgonzolate.

    (The spoilsports on the committee for the second or third edition took them all out,sadly)
  • That’s exactly right. “Organic”, Certified Organic” and “100% Organic” are all terms that were developed and codified for food only. Although I wasn’t trying to influence your conclusion, in my opinion, “Organic” when applied to non-food consumer product is almost completely useless - the only benefit it has is marketing.

    “Vegan”, on the other hand, is a term that means something.
    “Organic” as a term for colorants, however, is misleading. In this case, it doesn’t mean organic as in food grown from plants without using pesticides, it means organic as in chemistry, so that it refers to chemicals that are made from carbon and hydrogen. All FDA-approved organic pigments/colorants are synthetically made.
    Another point…
    I’m going to make an analogy you might understand - right now, you are in a similar situation to someone who has to write a history paper. The teacher asks for your topic, and you say America in the 1860’s. That’s much too broad. So you’ve narrowed it down to the Civil War. Still too broad, so you narrow it down again to the Battle of Gettysburg. But you don’t want to sound like a high school or even a college student writing a paper - you want to sound like a professional historian writing a book. That is the equivalent of what you’ve asked us to help you with, and I’m telling you that you have to narrow down much, much more to be able to pull this off.

    It takes many years, and a lot of training, to make a full-fledged cosmetic chemist. BUT…if we help you focus on one simple anhydrous product, with no more than 4 or 5 ingredients, we can probably get you to a point where you validly claim to know a great deal about that particular product type, and about running a project to bring that product to market.
    I need to make another point here too, before we get too far into this. Cosmetic Chemistry does not have a whole lot to do with biochemistry. It’s not completely unrelated, but to be a cosmetic chemist, you need to know chemistry, biochemistry, biology/physiology, microbiology, some physics, some chemical engineering, and even some marketing, sales, and business finance. Biochemists (and part of my undergraduate work was in biochemistry) only need to know chemistry and biochemistry, and as a result, get a lot more specialized. If you want to be a biochemist, and work in a lab trying, for example, to find a cure for cancer, this may not be the best project to focus on. But if you want to show a wide array of knowledge, and aren’t narrowly focused on biochemistry, this will be a good way to go.
  • I know it’s intimidating to start researching this from scratch, but persevere. I think you have a great idea.

    You might want to start with researching what the term “organic” means, what the standards for organic certification are, why they are important for food, what they mean when applied to non-food products, and why that may (or may not) be important for personal care products.
    Next, look up the FDA regulations for cosmetic colorants and explain why lip colors that follow FDA regs cannot be certified organic.
    Unless you want to spend a bunch of money, DIY Lip products are best made as either lip balm (in pots) or lipgloss in chapstick-style containers. Another part of your project should be investigating the filling equipment needed for each style of container, and documenting why you chose the finished product that you did. Go here for info: http://www.diycosmetics.com/
  • Bobzchemist

    Member
    January 14, 2015 at 3:23 pm in reply to: Chelating Agents - Alternatives to EDTA

    Itaconix DSP 2K (sodium polyitaconate) actually NPA approved.

  • Remember, please, that fragrance manufacturers have thousands of possible chemicals that might be used in any one fragrance mix, and each mix will likely have dozens of chemicals in it. That’s why testing is so important - every fragrance mix is very likely to be completely and totally different from every other mix - there is absolutely no reason to think that changing a fragrance will result in a product that behaves the same way as the product with the original fragrance does.

  • Why is the source important to you?

  • Bobzchemist

    Member
    January 12, 2015 at 8:41 am in reply to: gel stiffness

    Ideally, a Brookfield viscometer with a helipath stand and t-bar spindles is used. I’ve never worked with anything called a C value - do you mean Cps?

    Just fyi, a rheometer is a much more precise instrument than a viscometer, and costs between 10x - 100x more. That level of precision is not typically needed for cosmetics.
  • Bobzchemist

    Member
    January 12, 2015 at 8:34 am in reply to: “Dermatologically Tested”

    I always thought that was a very amusing way of making a claim. “Clinically tested” - note that there is no information as to whether or not the product actually PASSED the test…

  • Bobzchemist

    Member
    January 12, 2015 at 8:31 am in reply to: Matte liquid lip stain

    It’s made by Shin-Etsu. 

    For formulations, try the ones at KOBO
    Really folks, I double checked - less than a 10-second search each for both of these bits of information. Admittedly, I already knew that KOBO was a reliable source of information for formulas, but still…
  • Bobzchemist

    Member
    January 12, 2015 at 8:14 am in reply to: Crystallisation in Gel

    This is telling me that there is something very odd going on in your Aloe. Are you using a concentrated powder or a liquid? 

    Remember, Acid + Base = Salt, so the chances are high that whatever is crystallizing out is the TEA-salt of the chemical that is making your Aloe acidic. Aloe by itself is neutral pH.
Page 74 of 101
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