Organic Copper Peptide Serum Firming & Smoothing Lightly scented with essential oils Meet the ingredient your skin has been waiting for. GHK Cu, or Copper Tripeptide 1, is one of the most researched anti ageing actives in skincare. It firms. It renews. It supports collagen. And now Copper Peptide Duo GHK Cu Anti Aging Serum & Moisturizer Products Skin Care Copper Peptide Serums Skin Biology Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3 Dr. Brenner Labs
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