GHK-Cu
Gly-His-Lys tripeptide complexed with copper—popular in repair serums.
What is GHK-Cu?
Gly-His-Lys tripeptide complexed with copper—popular in repair serums. Also appears as copper tripeptide-1 on INCI lists. Conflicts with low-pH vitamin C routines are a common formulator note.
Where you will see GHK-Cu
On product labels, look for the INCI name in the full ingredient list—not just front-of-pack nicknames. Concentration, formula pH, and what else is in the bottle all change how a peptide behaves on skin or hair.
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Common questions
What does GHK-Cu mean?
Gly-His-Lys tripeptide complexed with copper—popular in repair serums. Also appears as copper tripeptide-1 on INCI lists. Conflicts with low-pH vitamin C routines are a common formulator note.
Is GHK-Cu an INCI ingredient name?
Sometimes. Brands use nicknames on the front label and INCI names on the back. Search our directory with either form to find the matching peptide page.