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Grape seed oil & Rose hip oil
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Thanks Doreen. Your experience is so great and helpful for me to learn.
2% salicylic acid with 15% polyols. How do you control the pH? What is original pH & concentration of salicylic ? I still get trouble about pH. Please help. Thanks. -
@Dtdang
I created a formula (Paula’s Choice liquid 2% Salicylic Acid exfoliant as benchmark) and tweaked it here and there.
The original pH of the SA solution is around 2.2, I adjust it (rather early in the cooling phase) to at least 3.0, otherwise the SA crystallizes out (if you keep it too long below pH 3), later when it’s room temperature I adjust again to around 3.8 (with NaOH). -
@Dtdang
I took the liberty to read some more of your questions/threads, and would like to emphasize that I don’t recommend to create exfoliants like these (with AHA acids or others, like SA) if you’ve just started to learn making cosmetics.
I wouldn’t even recommend using acids and (strong) bases at all, before you know exactly what you’re working with and what the potential dangers are/can be.
(Please don’t take this the wrong way, it’s your safety and well being I have in mind.)A tip if you do want to make exfoliants: you can visit Susan on SwiftCraftyMonkey’s website and start to make gentle sugar scrubs for example. Susan is a superb teacher and has great formulas.
The exfoliant example in my first message I gave was just to show I didn’t even need oils for my dry/sensitive skin then. And the point of my message was that you can use practically any kind of non volatile oil as emollient and that the expensive ones are advertised for marketing reasons only. Read @Microformulation ‘s reply about stability of grapeseed oil. Indeed best to choose the stable ones. You will find out by learning more about oils, why they oxidize and why some don’t or hardly do.
Side note about the expensive oils: I also meant using these pure on the skin (next to using a few % in creams). No more or less wrinkles/pimples than any other oil.
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Thanks Doreen,great advice. I will do that.
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