Ingredient or product comparison
AHK-Cu vs GHK-Cu at a Glance
A side-by-side reference for the two copper-binding tripeptides. Both are for laboratory research use only; hair-specific data for each remains preclinical. Alanyl-L-histidyl-L-lysine copper (II) Glycyl-L-histidyl-L-lysine copper (II) Tripeptide: Ala-His-Lys +
This source-based comparison does not add ratings or recommend a winner.
- A side-by-side reference for the two copper-binding tripeptides. Both are for laboratory research use only; hair-specific data for each remains preclinical.
- Alanyl-L-histidyl-L-lysine copper (II)
- Glycyl-L-histidyl-L-lysine copper (II)
- Tripeptide: Ala-His-Lys + Cu²⁺
- Tripeptide: Gly-His-Lys + Cu²⁺
- Alanine at position 1
- Glycine at position 1
- Hair follicle vascularization; perifollicular vessel density
- Extracellular matrix remodeling; collagen and elastin; wound healing
- More targeted; smaller body of literature
- Broader; includes follicle size and anagen-phase studies
- Topical solutions, lyophilized powder
- Topical, injectable vial, lyophilized powder
- Limited; emerging
- Extensive; decades of published research