Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule The biological signal for full body skin tightening. If you want to visibly improve skin density, elasticity, and firmness, you need the right biological messenger. Enter GHK Cu (Copper Peptide). This powerful molecule GHK Cu Copper Peptide Neck & Face Serum Copper Peptide Serum (GHK Cu + HA) PepDerm GHK Copper Peptide GHK Cu Tripeptide 1