DAILY SPOTLIGHT GHK Cu 200mg from Peptide Partners. GHK Cu is the copper tripeptide biohackers reach for when skin, scalp, and wound repair all need a single upstream signal. Endogenous in healthy human Ever heard of GHK Cu peptide? It's a naturally occurring copper peptide that helps repair tissue, stimulate collagen, and support skin healing. When used in injectable form, it works at a deeper level GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy 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