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Margolina Journal: Cosmetics Journal ranking: Q2 Key takeaways: Copper peptides, such as GHK-Cu, have potent anti-cancer properties and can improve skin regeneration and appearance

Initially, one injection intramuscularly per week on or around the same day for a maximum of 6 weeks

Its compact structure and defined copper coordination make it a well-characterized reference compound in regenerative-biology literature

It is used clinically and in research for tissue repair, with studies covering tendon and ligament injury, muscle strain, gut lining damage (including ulcers and inflammatory bowel conditions), and post-surgical recovery