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AD If you're buying copper peptides, look for GHK-Cu. It's a peptide your body already makes and makes less of as you age, and it delivers copper to the enzyme that cross-links your collagen and elastin. This one from @Remedy Science is 1% pure GHK-Cu, and it actually tells you the percentage. Most don't. They also chose not to encapsulate it. The whole formula was built as a cushion around the peptide. Morning and night, layers with your retinoid, no purging. Just don't use it at the same time as an L-ascorbic acid vitamin C. #glowingskin #antiaging #skintok