GHK Cu is one of the few peptides in this space with genuine randomized controlled trial data. A 2023 split face RCT in 60 participants showed a 22% improvement in skin firmness and 16% Copper Peptide (GHK Cu): Clinical Uses, Stability & Compounding Tips GHK Cu Side Effects, Complications, and Risk Profile GHK Cu 50mg Skin & Tissue Repair Research Peptide
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ghk cu clinical trials GHK-Cu | 99%+ Pure Peptide | Amino Club