What is GHK-Cu?
GHK-Cu is a naturally occurring copper-binding peptide whose levels decline with age. It is one of the best-studied peptides in cosmetic science, appearing in topical formulations researched for skin remodeling and hair follicle support.
Also known as: Copper Peptide, Copper tripeptide-1
How GHK-Cu is studied
GHK-Cu is a copper-binding tripeptide that occurs naturally in the body and declines with age. In laboratory and topical research it appears to influence genes involved in tissue remodeling and to support collagen and antioxidant activity, which is why it is one of the most-studied peptides in cosmetic science.
Commonly researched for
Typically stacked with
Research status
Important considerations
Most human evidence is topical/cosmetic. Systemic use is far less studied.
GHK-Cu — frequently asked questions
It is best known in skin and hair research — collagen and skin remodeling, wound healing, hair-follicle support, and antioxidant effects — mostly in topical formulations.
Copper peptides like GHK-Cu are widely used in cosmetics and have supportive in-vitro and topical human research, though results vary by formulation and concentration.
Far less so than topical use. Most human evidence is cosmetic/topical; systemic effects are not well established.