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| Peptide | Mechanism | Evidence Level | Optimal Phase | Typical Research Concentration | Consumer Product Concentration | Professional Assessment ||—|—|—|—|—|—|| GHK-Cu | TGF-β1 downregulation, MMP-2 upregulation | Phase II clin…
BPC-157 VEGF modulation, nitric oxide pathway regulation Days 0–14 post-injury Reduces collagen III deposition by 25–40% vs controls; accelerates collagen I transition Promotes controlled angiogenesis; reduces vascular permeabili…
The table below compares the three peptides with the strongest published evidence for scar healing based on mechanism, clinical trial data, application method, and observed outcomes. BPC-157 VEGF upregulation, NO pathway activati…