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 GHK CU 50mg GHK CU 100mg Laboratory Research Compound Rex Research PDRN GHK Cu Serum for Firming & Skin Repair Clean + Kind
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