Ingredient or product comparison
AHK-Cu vs GHK-Cu: Frequently Asked Questions
No. They share two of three amino acids and the same copper-binding mechanism, but the substitution of alanine for glycine at the N-terminus makes them structurally distinct compounds. GHK-Cu has a broader, more developed research base, while AHK-Cu's research
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- No. They share two of three amino acids and the same copper-binding mechanism, but the substitution of alanine for glycine at the N-terminus makes them structurally distinct compounds. GHK-Cu has a broader, more developed research base, while AHK-Cu's research has focused more specifically on hair follicle vascularization.
- Both have been studied in the context of hair research, from different angles. GHK-Cu has been examined for its effects on follicle size and the anagen phase in preclinical models. AHK-Cu has been studied more specifically for its apparent ability to increase perifollicular vascular density. Neither compound has established clinical evidence in human hair-restoration trials.
- They can be combined in the same research formulation, and the theoretical basis is that they appear to act through different but potentially complementary mechanisms. Whether they produce additive or synergistic effects has not been established in controlled studies. For research use only.
- Both formats exist. GHK-Cu has been studied in injectable form for wound-healing and systemic research applications. For hair and scalp research, topical delivery is more common for both compounds, and AHK-Cu is primarily used in topical research contexts.