Incorporating Acids: Everything You Need to Know
The three major types of acids are alpha hydroxy acids (AHAs), beta hydroxy acids (BHAs) and polyhydroxy acids (PHAs). So, what’s the difference between them, and where should you start?
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The Chemistry of Your Skin: Products You Shouldn’t Mix
VALLEY’s here to explain a few commonly used skincare products that should not combined to avoid irritation and breakouts.
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