Cosmetics Peptides Blue Copper Peptide Ghk Cu Powder on Sale GHK CU Powder (1 gram) Aseir Custom 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 We are celebrating 50 years of GHK Cu, the powerhouse peptide that changed the way we care for skin. Discovered in 1975, this tiny copper peptide has been making a big impact