GHK Cu Copper Peptide Neck & Face Serum GHK Cu (copper peptide) is a science backed anti aging compound that supports collagen production, skin regeneration, and overall skin health. Used in both topical serums and subcutaneous Products Skin Care Copper Peptide Serums Skin Biology GHK CU Copper Peptide, Face Serum, 1 oz (30 ml)
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