Direct comparison
GHK-Cu vs AHK-Cu
Class
Copper peptide
Copper peptide
Mechanism
GHK-Cu (glycyl-L-histidyl-L-lysine with a copper(II) complex) is a naturally occurring tripeptide detected in human plasma, saliva and urine.
AHK-Cu is a copper-binding tripeptide (alanine-histidine-lysine) and belongs to the family of cosmetic copper peptides, similar to the better-known GHK-Cu.
Studied effects
Skin & hair, Anti-aging, Recovery
Skin & hair, Recovery
Evidence level
early clinical studies
preclinical
Legal status (DE)
unclassified
not approved
WADA-listed
No
No
Half-life
Short plasma half-life (roughly minutes to 1–2 hours depending on the source).
Cosmetic copper tripeptide, used mainly topically; systemic pharmacokinetics are not established.
Studies cited
3
1
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