David

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David
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  • Unless you have overseen some raw material differences when scaling up, the usual suspect is processing time. Warming /Cooling and mixing 150kg takes much longer time than 150g which gives more time for unwanted chemical reactions to take place. 
  • You can't check pH of a W/O, since it is not defined. You can however, check the pH in the waterphase before making the W/O emulsion.
    in W/O pH Comment by David October 8
  • The formulation would help.
  • Best way to find out: measure, add an ingredient, measure, add an ingredient, measure. Or the knockout method. It is difficult to say which ingredient it is, even for chemist,  since the list above is a mix between trade names, INCI and chemical nam…
  • @natzam44 - Hi, thanks, I am very aware of the alternatives, however the question was if this raw material is available other as DIY.
  • You need to be a bit more specific to get a good answer. Skin and hair care can mean anything from make up powder to aerosol hairspray. Location, quantities and budget help as well. 
  • Disperse it in glycerin or propylene glycol first
  • You probably won't need oleth-5 either for a start. Ceteareth25 and peg40 hydrogenated castor oil is more than enough for this type of formulation. 
  • IN this case you get some results by googleing  "apple cider vinegar INCI"  otherwise you ask your supplier for a document as Mark stated above.
  • @Perry -yeah, that makes sense I guess. It would however be great if people could publish also "negative" results. This would correct the bias.  
  • I agree the peppermint oil paper/research has flaws, but what buggles me is: who would spend vast resources to really prove that something that you can buy in the supermarket works as good as a patented molecule for a given medical application?
  • @Sibech -yes, good point - however only L'oreal would know. It is for sure not an ingredient. My guess is FIL# = formulation ingredient list number, used as a double check to get the LOI correct
  • Glyoxylic Acid (in combination with TMS) would be the primary suspect using the information given. Alternatively, find a driven salesperson, call it fizzy emulsion and you might get rich!
  • It is more likely that benzyl benzoate is an allergene from the perfume, and not added extra as preservative. HYDROGENATED CASTOR OIL is not the same thing as PEG-40 HYDROGENATED CASTOR OIL, I haven't tasted them though. :smile:
  • Cosmetic formulating is often about synergies between ingredients and optimising mixtures. It is not at all surprising that mixing two irritant ingredients together can give mildness as a result.
  • @natzam44 When replicating a formula always start with the same ingredients. You can't make chicken soup using porc. You can however create something new which may be more interesting!
  • Don't know exactly what makes a cosmetic chemist but here are 3 symptoms:  :D - Spending to long time in other peoples bathrooms checking ingredients on their cosmetic products - Gettting stuck in the cosmetics department in the supermarket forget…
  • In case you want a free formulation, google slimming gel formulation Otherwise there are lots of consultants above on the pinned post SLIMMING GEL-CREAM Personal Care Magazine Formulations https://www.personalcaremagazine.com/formulation.../slimmin…
  • What did you try and in what way have the formulations failed?
  • I was at a seminar a couple of years ago where the a German dermatologist claimed the increase of sensitation to cosmetic products was due to that parabens are substituted by isothiazolinones...however isothiazolinone is now banned in EU in leave in…
  • The reason you keep on seeing different answers is that more parameters are involved than pH, like e.g. water activity. Moreover there is no definite limit. Although unlikely to end up in a cosmetic product some microbes are growing optimally around…
  • here is oligopeptide-10  a shorter peptide- enjoy :smile: (2S)-6-amino-N-[(2S)-1-[[(2S)-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-1-[[(2S)-6-amino-1-[[(2S)-1-[[(2S)-1-amino-4-methyl-1-oxopentan-2-yl]amino]-1-ox…
    in INCI Names Comment by David June 2018
  • The oligopeptide-1 is a 55 amino acid long peptide with Mw 6500. It would get a quite long IUPAC name - that's probably why you can't find it...
    in INCI Names Comment by David June 2018
  • Is there an advantage mixing soap and an SLS/SLES/CAPB based recipe? Sounds to me you need to get rid of the "soap based" idea - your recipe is anyway not 100% soap based so why bother?
  • @aperson I totally agree that the fresh plant juice ifself is certainly no fairy dust, niether is orange juice or vitamins. However, aloe can not be used in cosmetics as an anti-inflammatory bioactive since this would make it a medicine. Therefore p…
  • You make assumtions here without referring to any sources or reasons. Who says you can't use >2% TEA? Why not more TEA than shea butter? Who says you should have more stearic acid than cetearyl alcohol? Who says it should be 15-20% ? The beauty …
  • yet another reason doe is difficult with cosmetic formulas is that most cosmetic ingredients are multifunctional. although it might be possible to optimize viscosity, other properties such as skin feel, texture, color etc. need to be kept constant (…
  • Humor or not - sometimes I seriously get the impression that consumers would read the NOT-in- the- list-of-ingredients more thoroughly than the actual LOI.
    in Viscosity Comment by David March 2018
  • The ingredient list above is not for homemade lipsticks, it's a mass production formula. The reason that larger manufacturers put a certain ingredient in the formula is sometimes not even obvious to experts. It can be price, availablity, patents, up…
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