AHK Cu Swissceuticals AHK Cu, Copper Tripeptide 3, Ingredient for Skin, Scalp, Healthy Hair Growth 0.5g $19.69 A few years ago, barely anyone was talking about copper peptides now GHK Cu and AHK Cu are everywhere in skincare, biohacking, and longevity conversations. But did you know there are copper peptides Copper Peptide Hair Growth Serum (10% GHK Cu + 5% AHK Cu) 30ml ROBYN'S TACK ROOM