Copper Peptides Before and After: Visible Skin Improvements Explained Hubmed GHK Cu, the copper peptide, is a game changing injectable for radiant skin and so much more Here's what it can do: Boost collagen for smoother, firmer skin Anti aging Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: GHKCU Skin Transformation Results After 4 Weeks Reducing Redness & Inflammation with GHK Cu Copper Peptides Vitali Skincare