purplevision
@purplevisionm o v i e s | m a k e u p | r e c i p e s | r a n d o m s t u f f | eng/esp |On insta as @purplevisi0n
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2018-02-10 19:10
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Fick's Law of Diffusion in Cosmetics: Understanding How Products Penetrate Our Skin (Plus Practical Insights on Skin Care products!)
Have you very wondered why two skin care products with the same active ingredient, will have different effects on skin? Why do cosmetic formulators add so much ingredient in a single product