A GHK Cu face serum appears blue because the active ingredient, GHK Cu (copper peptide), is naturally a blue colored powder, meaning its inherent color transfers to the serum when mixed in; this blue hue What is GHK CU & why its called the Blue Magic !!! , Today I want to talk about a very powerful ingredient in skincare & haircare & Longevity Wellness , What is Copper Peptide?, Its basically pure Not all Copper Peptides are created equal If you've tried copper peptides before and saw no change, here is why: Concentration and Stability. Most serums use a diluted solution that barely scratches The Blue Revolution: Why 1% Pure GHK Cu is the New Standard for Mature Pure & Cimple