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Ingredient guides

What each active is, how it's used in skincare, and what to look for on a label. Written to be useful whether or not you buy from us.

GHK-CuWhat GHK-Cu is, why it's blue, what 1% means on a label, how to use and store it, and what to check before you buy a copper peptide product in New Zealand.AHK-CuWhat AHK-Cu is, how it relates to GHK-Cu, the names it goes by on ingredient lists, and how it's used in cosmetic products.