Ep 171: Ask a Cosmetic Chemist: Ron Robinson
Fat Mascara
00:00
How to Choose the Right Vitamin C for Your Skin
Vitamin C is a very sensitive ingredient. So, it does oxidize in the presence of air or light. The product should be in a well-contained, almost airless type of package. No light, you know, gets to it and helps. And it makes it shift color.
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