Iaskedbetter
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In addition, ionic surfactants (SLS, SLES, sodium lauroyl lactylate) do not have an HLB (or do not adhere to the HLB system).
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That might work but you're better off using an actual buffer system (acid + conjugate base). Use a buffer table (citric acid + sodium citrate). Otherwise a phosphate-citrate buffer should work in that range.
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I am guessing OP is referring to something like this: http://www.ulta.com/ulta/browse/productDetail.jsp?productId=xlsImpprod2390219 Should this be the case, the answer to your question is a combination of filling technology and miscibility. The cle…
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Blanova Muls Eco 77
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That definition is...excruciatingly in depth and specific.
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There are many industry standard styling tests. One is measuring curl retention at high humidity. This test can be performed in as short as a couple hours, but it requires a humidity chamber (or at the very least a really humid area like a boiler ro…
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Were you looking for general chemistry or cosmetic chemistry? Get @Perry (see how nicely that worked out?) to learn about some cosmetic chemistry courses this summer.
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Doesn't sound like misinformation, just a suggestion. I agree that 40% vegetable oil is likely going to produce a rather greasy concealer...but maybe that's what your customer/marketing team is looking for. Or maybe in your formula it isn't that gre…
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At this point you're talking more about sensory characteristics and less about formula performance attributes. Squalane won't do anything to help your wear issue. Typically if a customer or marketing team tells me they like the formula, save for one…
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That is not really a replacement but you could still certainly use it. I wouldn't go crazy with it though because of the dimethicone. Isododecane is "drier" so I would go that route. If you can get your hands on the X-21-5595, I would gi…
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Basically what @Bobzchemist said. Ganex is the VP/Eicosene Copolymer I mentioned. I have used all 3 of those with good results on getting long wear. If you want to take Bobs advice on the volatile point, I would go with D5 or Isododecane to replace …
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Not sure what you mean by "available off the shelf". All of those options are oil soluble. Polyethylene has some extreme heat requirements.
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I assume by "staying power" you mean "wear" or "long wear"? There are a myriad of options to achieve this. Polyethylene, Trimethylsiloxysilicate, VP/Eicosene Copolymer, just to name a few.
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Do a draw down of your standard and test batch on white paper (or draw down card if you have them) to compare the product appearance. Once you get close on paper test it out on skin. It is extremely helpful if whoever is approving the formula evalua…
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It sounds like what you are really looking for is a perfume fixative. There are a myriad of options to choose from so I would play around with a few to get your desired effect. More complicated routes would be some type of encapsulation tech or poss…
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1) Glycol Distearate has little, if any, emulsifying "power". It is primarily used for opacifying and creating a pearl effect. 2) I do not know of any Tween products that are suitable as W/O solubilizers.3) Like Bill said, W/O/W are a &quo…
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Not sure if this idea is sound chemically...but what about a nitrogen blanket?
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@Perry I'm sure you memorized the key components of your VO5 formulas. Why not just make some for yourself at your new job?
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"Under the new proposal, companies will be required to report “serious” adverse health effects they hear about from consumers — reactions to products that result in death, disfigurement or hospitalization, for example — within 15 business days.…
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For simply knocking off a formula, a "% solids" test (what Bob just described) is more than adequate to give you a starting point.
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Check this out. Should prove extremely helpful. http://www.makingskincare.com/preservatives/
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@MarkBroussard Unfortunately I think doing that hinders or even prevents growth. Ideally, we (or at least I) would like to see this small community grow. And it doesn't have to be just experienced chemists and people within the industry. Home crafte…
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@Ruben The answer regarding whether it is industry standard to "QS" is yes and no. I have worked in companies that do this and companies that don't. In a foundation I developed a few years ago, we had to do some significant shade adjustin…
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You typically cover/seal the vessel you are heating your oil phase in as you would a water phase to mitigate evaporative loss. If D5 is the only volatile chemical in your oil phase, you could also "QS" it just prior to phase combination (…
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Partly agree with you @DavidW. You can easily spot the people who are "takers". However, I realize that a lot of people use this site as an educational tool, and aren't in a position to give sage advice. I think a general "best practi…
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Here is my Top 51) Do not request complete/finished formulations. The best way to get help on this forum is to show that you actually need help and are not trying to use us to do work for you. With that, if you have an existing formula that isn’t w…
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Here's a handy little guide for labeling requirements for "organic" cosmetics.http://www.ams.usda.gov/AMSv1.0/getfile?dDocName=STELDEV3004446 You'll find a lot of companies go with the "made with 70 percent certified organic ingredi…
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"Lisea cubeba (may chang)" is actually supposed to be LITSEA cubeba. It is possible that the xanthan gum and rice/corn extracts can produce a loose, messy foam as well as some hold (or "stickiness" that would give the illusion of…
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I really tried to let this one go, but for some reason I can't restrain myself. @perspicacious You seem to have a very staunch position on your perception of animal testing, but I think you will find yourself in an extreme minority among your peers,…
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Wish it were that easy friend. There is no magic "ratio" that works every time. A lot depends on which emulsifier you are using, what your formula is composed of, and the levels of the various chemicals.
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