The copper peptide trend has gone from creams to injections — ahead of the science

Copper peptide products marketed for skin firmness, wound healing, and anti-aging effects are now available in injectable form as well as topical creams. GHK-Cu is the peptide most commonly used in these products. Scientific evidence for the effectiveness of copper peptides in humans remains limited, with most studies conducted in laboratory or animal settings rather than clinical trials on people.

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