

Bobzchemist
Forum Replies Created
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Bobzchemist
MemberOctober 19, 2017 at 3:12 pm in reply to: Decyl Glucoside - Allergen of the year: 2.2% contact dermatitis rate in 2016 - any alternatives?Do we know if it’s one particular brand of Decyl Glucoside, or all of them?
Many different companies make this stuff, from very large to relatively small, and I don’t think that the quality control is equally good across the board.
Even worse is the fact that Decyl Glucoside comes in cheap Industrial Grades and morPersonal Care grades (which are refined/purified further), and I don’t think some personal care
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Adding water to lipstick (or any lip product) makes it absolutely mandatory to have a robust preservative system.
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There’s not a way to save this batch, but if you want to make something with Cinnamon powder, you have to treat it like it’s a pigment, and use a foundation base formula.
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Personally, unless a formula is really odd, I’ve never had much trouble with reverse-engineering one, so I’d lean towards a contract manufacturer, unless you are well and truly rolling in the dough.
Starting a cosmetic line, or launching a new product, is mostly about marketing, as long as you have a decent formula. Pretty much any chemist, whether working for a contract manufacturer or independent, can provide you with a decent formula. But the more money you have available for marketing/sales, the better you’ll do.
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Bobzchemist
MemberOctober 17, 2017 at 4:48 pm in reply to: machines to check formulation greasy, oily, waxy and moreYou very likely can’t afford them. Search for “texture analyzers”.
Can you tell us why you think human evaluation of these parameters isn’t good enough? Hardly anyone in the cosmetic industry uses machine evaluation.
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It’s a business decision. Run your business case twice, once for an independent chemist, and once for a contract manufacturer. Add the full cost of an independent chemist (to reverse engineer the contract manufacturing formula) three or four years after your startup date and see what you come up with.
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Bobzchemist
MemberOctober 15, 2017 at 3:48 am in reply to: liquid foundation doesn’t stick to the skinThat’s not enough.
Are you a hobbyist or a professional, and what country are you in?
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Bobzchemist
MemberOctober 14, 2017 at 4:09 pm in reply to: liquid foundation doesn’t stick to the skinIf your foundation changes color on skin, it always means that you haven’t dispersed your pigments strongly enough. How are you grinding them into your product?
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Bobzchemist
MemberOctober 13, 2017 at 4:06 pm in reply to: liquid foundation doesn’t stick to the skinThanks, Belassi. I’ve gotten out of the habit of paying attention to the EU, since I work for a US-only company.
What about volatile dimethicone fluid? Is that still OK?
If it is, it would be a good substitute for D5.
Also, the trimethylsiloxysilicate is the film former/adhesion promoter. If the formula isn’t sticking, increasing it would be the first thing I’d try. Using silicone-treated pigments would be the second thing.
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Bobzchemist
MemberOctober 13, 2017 at 3:58 pm in reply to: STORAGE - Is it better to store my finished product in a refrigerator?If you have a stable emulsion, probably not. If you have an unstable emulsion, maybe. This is why we test stability for every formula.
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Bobzchemist
MemberOctober 12, 2017 at 9:11 pm in reply to: STORAGE - Is it better to store my finished product in a refrigerator?All other things being equal, refrigerator stored products will last longer.
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Bobzchemist
MemberOctober 12, 2017 at 5:31 pm in reply to: liquid foundation doesn’t stick to the skinWhat agency has banned D5, and when was this decision made? I can’t find anything on this. I know D4 was determined to be bad, but not D5.
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Bobzchemist
MemberOctober 9, 2017 at 11:12 pm in reply to: BUILD VISCOSITY TO A VERY FLUID W/SILICONE SUNCREAM SPF50Silicone wax from Dow
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Bobzchemist
MemberOctober 5, 2017 at 5:35 pm in reply to: Shaving soap consisting of only two ingredients?To explain a little further - after processing, this shaving cream is made up of some mixture of up to nine soaps plus glycerin and fragrance.
When this is made, the Potassium Hydroxide, Triethanolamine, and Sodium Hydroxide saponify the Stearic, Myristic, and Coconut Acids, making traditional soaps. (If you tried to put all of the potential reaction products on the label it would be too long and confusing - Potassium Stearate, Potassium Myristate, Potassium Cocoate, Sodium Stearate, Sodium Myristate, Sodium Cocoate, Triethanolamine Stearate, Triethanolamine Myristate, Triethanolamine Cocoate).
One of the problems I see you having is your saying that soap is too “harsh”. That usually means that the soap cleans too well, drying out the skin. Adding glycerin usually fixes this.
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You could try mixing and heating with activated carbon and then filtering.
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Try talking to the folks at Interpolymer.
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True, the FDA primarily responds to complaints these days - but do you really want to give your competitors that much potential leverage over you?
Also, “certified organic” skincare is regulated by the FDA, the USDA, and the third-party certifiers. The certifiers are particularly aggressive about filing lawsuits against any non-certified product fraudulently claiming “organic” status, since they are protecting their livelihood. I think those products are living on borrowed time.
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Not unless your product has water in it.
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Apparently, they’ve confused the rules for soap with the rules for cosmetics. It is confusing, and especially when they are convinced they’re right because the read a chapter of some pseudo-expert’s book, impossible to correctly advise folks.
It’s hard to tell what will happen with this regime - will the FDA regulations be enforced strictly so that the competition for the big guys is reduced, or will the FDA be decimated by budget cuts? Only time will tell.
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I’ll also point out that as an ingredient listing, it is non-compliant for FDA rules. Using anything other than INCI names is not allowed, so things like “(and), or (Natural), or (Ecocert)” are incorrect.
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Bobzchemist
MemberSeptember 26, 2017 at 1:18 am in reply to: How can I know that a particular lab or chemist is good?That’s not a lot of money for formula development. Are your formulas complete already?
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Bobzchemist
MemberSeptember 21, 2017 at 2:36 pm in reply to: Need your knowledge on anhydrous formulas, u wise people!“Distearoylethyl dimonium chloride is not only more eco-friendly and economical, it is nearly as efficient in conditioning as behentrimonium chloride.”
https://www.happi.com/issues/2013-04/view_features/ethnic-hair-care-ingredients
https://personal-care.evonik.com/product/personal-care/Documents/happi-varisoft-eq-65.pdf
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I’m proud of myself for avoiding talking about the (mostly juvenile) humorous thoughts that are running around my head when considering a marketing campaign for a product like this.
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Will TiO2 work for this purpose? It will rub off eventually, but using it would get around most safety concerns.