GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration 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 7% GHK Cu Cosmetic Ingredient Accelerant Skin Biology 15 ml GHK cu 100mg Buy in Canada Advance Peptides GHK Cu Copper Peptide Neck & Face Serum GHK Cu Copper tripeptide (1% solution) Sapolita