

Bobzchemist
Forum Replies Created
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Bobzchemist
MemberDecember 2, 2016 at 2:42 pm in reply to: On becoming a cosmetic chemist consultantI find it’s bad enough keeping up with US and Canadian regulations, so I do the same as you when/if I take a gig, but it occurs to me that you might be able to partner with a consultant that is EU only and run joint projects.
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Bobzchemist
MemberNovember 30, 2016 at 5:11 pm in reply to: On becoming a cosmetic chemist consultantAlso, there is a clear difference between a consultant who’s just trying to keep busy after retirement, one who’s trying to get some income going between jobs, and someone who’s trying to make a living at it.
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Bobzchemist
MemberNovember 30, 2016 at 2:44 pm in reply to: Maximum conc. of Mineral oil allowance in skin care productsFine, be picky about the last 1%.
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Bobzchemist
MemberNovember 30, 2016 at 2:43 pm in reply to: On becoming a cosmetic chemist consultantAs far as advice?
Get your money upfront, or at the very least, withhold enough so that your client has something to lose if they stiff you.
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Bobzchemist
MemberNovember 30, 2016 at 2:41 pm in reply to: On becoming a cosmetic chemist consultantMost contract manufacturers have their own development lab, the services of which are usually provided for “free” to customers who will be placing a large enough order. (The charge for the lab work is actually built into the total cost)
Sometimes, a lazy and/or under-equipped consultant will try to get a manufacturers development lab to do some of their work for them. This produces a lot of conflict, since typically the contract manufacturer will not divulge the precise formula without charging extra.
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Bobzchemist
MemberNovember 30, 2016 at 2:32 pm in reply to: Maximum conc. of Mineral oil allowance in skin care productsThere is none, because mineral oil at 100% is perfectly safe on skin.
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OK, you have me beat, I only know 3, and 1 of them is mostly useless.
English is very complicated and illogical, so It’s a very common thing for everyone learning English to mix up can/could/would/may. It’s so common, in fact, that all of us who’ve grown up speaking English have had a teacher correct us at least once, usually with something similar to what Belassi and I did.
I guess it’s funnier when you’ve had it done to you growing up, so I’m sorry if it came across wrong.
To get back to your question, are you looking for plant material, extracts, oils, infusions, or something else? What country are you in, and do you need grams, kilograms, or truckloads?
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Oh, so you’re looking for a package engineer?
If I were you, I’d hook up with one of your local engineering colleges, and get a student or two to help you design and fabricate prototypes on a 3D printer. Commercial 3D printers are just about to the point where they are affordable for small component runs, so you probably won’t need the massive expense of fabricating a custom metal mold.
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Sorry, joke/lesson in English.
Can anyone help = Is it physically/intellectually possible that someone could help? Answer is yes or no.
Could/Would someone help do X, please = more grammatically correct request for action
https://globalrose.com/roses/rose-petals?gclid=CMrfiOGdzNACFY87gQodHYYAZw
http://www.bulkapothecary.com/lavender-flowers/?gclid=CLvP3piezNACFZA7gQodGbAO7Q
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Bobzchemist
MemberNovember 28, 2016 at 4:55 pm in reply to: Contract Manufacturer: Aerosol + Hair ColorDon’t use aerosol. Search for BOV (Bag-on-valve) fillers. Eliminates a whole host of problems.
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First off, what country are you in?
Secondly, what do you mean by “create a custom designed eyeshadow palette”? Do you want a style consultant to help you determine the best colors, or a color chemist to make formulas, or both? If this is for a commercial product, what kind of minimums can you afford?
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try cutting the water back 20 - 30%
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I’m guessing you don’t really need the volatility or the skin feel of the Cyclopentasiloxane, then? Neither of those will come close, although 10 cSt Phenyl will be closer.
Cyclopentasiloxane is about 0.1 cSt. or less.
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Bobzchemist
MemberNovember 21, 2016 at 9:06 pm in reply to: Foundation with my formula, need a company who can produce!You might be better off buying a colorless base and tinting your shades yourself.
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Bobzchemist
MemberNovember 21, 2016 at 2:52 pm in reply to: Foundation with my formula, need a company who can produce!Try the SCC website. Otherwise, let Google be your friend.
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One easy solution is to go back to the hairspray formulas that were around before VOC’s became an issue in California. @Perry could probably help you with that.
Another easy solution is to look at the spray adhesives that are already being sold commercially.
And finally, talk to the companies that make hairspray resin, like Arizona Chemical. They should have some old starter formulas.
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Bobzchemist
MemberNovember 21, 2016 at 2:40 pm in reply to: Why do we actually need chelating agents?This is a lesson that we all have to re-learn every so often:
“If it ain’t broke, don’t fix it” -
Depends on why you use it. If you need a volatile liquid, you might have to go with low viscosity dimethicone.
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To my knowledge, no bacterial pigments are approved for use in cosmetics or drugs in the US.
However, bacterial processing is used to make cosmetic ingredients. Zemea is one notable success.
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Bobzchemist
MemberNovember 16, 2016 at 8:52 pm in reply to: Sodium Metabisulfite or sodium sulfite as antioxidantAlso, many people are allergic to sulfites/sulfates when consumed. Probably not going to go over at all well in a cosmetic product.