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Alternatives to Daily Injections Some users prefer less frequent injections or topical GHK-Cu products

To evaluate the stability and retention of G/D-CuP in vivo, it was topically applied to full-thickness dorsal wounds in diabetic mice

Concentrations vary widely based on study design, experimental endpoints, and research model selection

But since peptide coupling agents are described as immune sensitizers, it stands to reason that the risk even if its small exists for everyone.18 Copper peptide uglies Anecdotal reports suggest that some people may experience worsened skin aging, instead of anti-aging, after using products with GHK-Cu, a rare concern dubbed copper peptide uglies. While this isnt necessarily a safety issue, it is a (again, rare) potential negative effect of using copper peptide products