gld010

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gld010
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  • Try <1% Sodium Surfactin dispersed in glycerin, with an oil phase between 60-80%.
  • Are your pigments coated with anything or are they plain oxides? Coated pigments tend to play nicer with w/si emulsions (emulsions in general, really) in my experience
  • Color cosmetics are a pain, speaking from experience! Boost up levels of existing emulsifiers -- your PEGS/PPGs. If you are calculating with HLB make sure to factor in the oil your pigments are dispersed in (it's easy to forget). If you have acces…
  • Mascaras are, in fact, pretty challenging. I don't think that formula will perform very well, based on my experience.
  • Castor oil is highly polar whereas mineral oil is non-polar. If you've ever heard "like dissolves like" in a chemistry context, polarity is usually what that refers to. Water is polar and can mix with other polar solvents. Non polar emollients are m…
  • Its a pretty common problem but it's also caused by many, many issues ranging from how you apply the product to the formula! If you are using a lot of silicone elastomers/crosspolymers I'd reduce them, when I worked in color cosmetics we used a lot …
  • It could be your gellants/thickeners, it could be silicones, it could be pigment coating. We can't say more unless you post a formula.
  • Yes, use the sunscreen simulator as a very loose guideline as the thickness and composition of a formula can impact the SPF.
  • Polydimethylsiloxane  is known as dimethicone in the cosmetics world. the way to get thicker dimethicone is to do what perry said and buy a thicker grade. the thickness of dimethicone depends on how the silicone polymer is structured. im unsure of h…
  • I had to take  the same math classes as engineers did at my school to get my chemistry degree, I don't think math is a weak point for me at all.
  • MarkBroussard said: @HOHCos: The reason you are not getting a response is that it's a diversion of time to reply to someone just to tell them that you don't work on color cosmetics.  Also, as Belassi noted, many of the color cosmetic requests …
  •  Agreeing with Perry... but if a client requests something like that in the product at 1% so I have to comply. I have used lactobacillus lysates before at 1% in a thin emulsion and there is a bit of an odor. Nothing that hits you in the face u…
  • I think that "grime" is from the high amount of Xanthan gum- it's forming a layer as it dries and will start "pilling" and peeling off your skin when rubbed. Xanthan gum is usually used at 0.5% or less. I can't comment on why it's doing it only in t…
  • 70% Sorbitol solution. I agree with Microformulation though, glycerin is cheap and considered "natural" so there is no reason to not use it unless specifically requested (I've had a few odd "no glycerin" requests but it's not the norm, even for "nat…
  • Youd need some kind of surface modified pigments coated with something to make them dispersable in water. Is Kobo distributed in your country? Sensient? They have options like this. You should be milling your pigments anyways, even if they are coat…
    in pigments Comment by gld010 December 2018
  • I would suggest using Panthenol at a lower level, or even not at all. There are global panthenol shortages due to plants in China closing and prices are jumping up. I don't think your clients will notice a difference without it. Maybe put it in at 0…
  • I agree with @Dirtnap1. Broccoli seed oil has nice slip and shine but I wouldn't consider it a true alternative.
  • Which aristoflex? Aristoflex Silk is the most tolerant of salts so maybe try that one, though maybe 5% would be too much... But it wouldn't hurt to try Siligel from Lucas Meyer has great skinfeel and salt tolerance but your gel won't be crystal cl…
  • ngarayeva001 said: @gld010 If you read the LOI of the most popular cosmetic products on the market you will notice that 99% of the ingredients can be found on lotioncraftet or makingcosmetics. And I am not talking drug store. You can recreate $…
  • ngarayeva001 said: Self-study is often underestimated. I agree! But it is hard to convince people you're worth hiring without the 50,000 USD piece of cardstock to assure them. I guess for cosmetics formulating you can try to knock out …
  •  "A lot of what I know about cosmetic formulation I actually learned on the job." She continued: "I learn a lot by trial and error. Take that as you will." As far as I know this is a normal way to learn formulation chemistry? My first gig was as a…
  • Welp, disregard my response lol
  • I find stir bars helpful when pre-making slurries and small amounts of solutions (dyes, pH adjusters, etc) but we have a LOT of hot plates around, if you're only buying one then you should probably focus on other features.
  • I've never made a soap before but I noticed there is nothing to neutralize the stearic acid since you replaced TEA... Why did you replace TEA with ethanol? What functions do you think they have in common? Ethanol will not neutralize anything. To ge…
  • I have nothing to say about the preservative side of things (other than this information you have provided is valuable), but if you want to fragrance your formulas "naturally" you can try Aromatic Waters or Aromatic Extracts. We get ours from Carrub…
  • What material are your pans? Can your pans rust? What kind of environment are your pans kept in?
  • We need to see a list of full ingredients. It could be mold on the sugar, it could be oxidization, who knows.
  • Maybe try a "liquid crystal" type emulsifier? They are very easy to work with and you don't need to worry about HLB calculations. Use less for a thin cream and more for a thick cream. Olivem 1000 or Montanov 68. Use stabilizers like cetearyl alcohol…
  • I just wanna say this thread is super interesting! The contract manufacturer I work for doesn't really do hair products so it's really cool to see in depth discussion like this even if I'm not going to use the information. I've enjoyed following you…
  • Titanium Dioxide is a bugger to disperse fully even in a kitchen blender, I feel your pain. Try grinding your white pigment in a mortar and pestle before adding it in to the coffee grinder if your batches are small enough to.
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