Bobzchemist
Forum Replies Created
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Some dishwashers have a sterilization cycle, otherwise use the procedure Mark described.
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I’ve always done it with molecular weight.
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Density is the ratio of weight to volume, and is usually compared to water as a standard.
If you are formulating by volume (as if you were cooking, for example) then density and/or specific gravity would be a concern - as in, what is the weight of the ingredient in a tablespoon full?When you formulate by weight, everything becomes simpler. You need to put 10 grams of an ingredient into your batch - it doesn’t matter if that 10 grams is a teaspoon-full or a cup full or a gallon-full, you still need 10 grams of it in your batch.Bulk density and tapped bulk density are measures of how much weight of a powder can fit into a specific volume. You are formulating strictly by weight, so neither of those factors come in to play.Hope this helps. -
Not by themselves, they don’t.
Stearic Acid can be converted into an emulsifier by saponifying it, i.e, reacting it with sodium hydroxide or potassium hydroxide to produce sodium stearate or potassium stearate. -
Nick Morante and Jennifer Morante-Di MarcoNick Morante Cosmetic ConsultantsRichard Konik
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Bulk density only matters when calculating the fill weight of a product.
All formulations should be measured by weight only, which makes the density of any ingredient entirely irrelevant. Whoever told you to use bulk density in formulation either has several screws loose or was playing a cruel trick on you. -
None of those are emulsifiers, and none are water-soluble. You’re not going to be able to make a water based product with the ingredients listed.
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Make this formula below, and then test it. If your testers don’t develop chapped lips, you have a formulation problem with your previous formula. If they do, you have a testing methods problem.
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Check with the polyisobutene or hydrogenated polyisobutene manufacturers: Creations Couleurs, Croda,, Elementis, Lipo, Presperse, Sensient for recommendations about use level.
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The FDA ha no jurisdiction over weights and measures. This is the FTC and the NIST, and some state regulations also. This might help:
http://www.nist.gov/pml/wmd/pubs/upload/h133-2015-web-final.pdf NIST Handbook 133 - 2015 (Current Edition) Checking the Net Contents of Packaged Goods -
My personal opinion is: Why re-invent the wheel? Do a Google search for “petrolatum replacements” or “Wax Jelly”, buy one of the mixtures, add some Vitamin E and a preservative blend, and you’re done.
We’ve talked about this before: -
I posted this elsewhere, but I thought here would also be helpful.Where one can find a cosmetic chemist:+In the US, at the Society of Cosmetic Chemists (SCC) website+In the UK, at the Society of Cosmetic Scientists (SCS) website+In Australia, at the Australian Society of Cosmetic Chemists (ASCC) website https://www.ascc.com.au/content.php?id=7+For the rest of the world, find a country here first, then go to that countries website:International Federation of Societies of Cosmetic Chemists (IFSCC)+On LinkedIn, there are several groups, or you can just search for “cosmetic chemist”+In the cosmetic industry professional magazines advertisements-HAPPI (Household and Personal Products Industry)-GCI (Global Cosmetic Industry)-Cosmetics & Toiletriesalso look at:+The Personal Care Product Council (PCPC)+Cosmetic Index
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Formulating color cosmetics is a specialized part of this business. If you’d like, I can put you in touch with some people who do this, but it’s not the sort of project that will only cost a few hundred dollars.
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Be very careful and use aseptic techniques when adding HA to your serum, or add an additional amount of preservative - the serum looks to be minimally preserved, and probably won’t react well to an infusion of microbes.
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Yeah, but…an average 1,800 square foot house goes for $180-$200,000 in Kennesaw, GA. Total cost would be (slightly) under $1,000/month. A $500,000 house would cost at least twice that monthly. And then there’s taxes…
But, location counts. It’s just that my salary goes so much further down here. And I could expect a reasonable cost of living increase if I wound up moving back to the NY metro area. But the folks in CA seem to think that I should be just fine working in California for about what I’m making here in Georgia - mostly because there are plenty of chemists already working for about that salary there. -
Yes, we can probably do this for you at Beaumont Products. We make similar products, and we are set up to be contract manufacturers. Please contact me: rzonis@beaumontproducts.comBob Zonis
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You can also look on LinkedIn
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Find trial formulas for liquid lipstick on the web, and use them as starting points. Making a liquid lipstick matte just requires adding mattifying agents.
Or, you could save yourself months, possibly even years, of formulating work and just hire a consultant. It all comes down to how much your time is worth. -
We do it all the time - but it requires a very different process.
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Belassi, I still don’t think there’s enough Polysorbate 80 in the ewax to act as an emulsifier for any more than a 1:1 ratio with an emollient, at best.
And Mark, I think that there are better ways to do this. -
What is the point behind not using an emulsifing system?
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you don’t need a pump,you need a dispensing drum - if you can manufacture in a drum. Otherwise, 6k doesn’t seem too far out of line. Have you looked into leaing?
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This is one of the things that somewhat depresses me about being a cosmetic chemist.
A job with this level of experience and responsibility usually pays about $60,000/yr. - $80,000/yr., pretty much regardless of whether you work in the New York metro area, the Chicago metro area, or the Los Angeles metro area. You might even make a little less if you are away from these centers of cosmetic R&D. And yet, the cost of living in these places is very different.I could never afford to live in the LA area, as much as I’d like to. -
My guess would be that either they’re using the lactic acid as their pH adjuster and the citric acid is coming in as part of a pre-blended raw material, or vice-versa. If you’re buying each component seperately, you should be fine with using just citric acid.
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As long as you use (and test for) adequate preservation, you should be ok. Remember to test stability, though.