GHK-Cu vs AHK-Cu
Comparison
GHK-Cu and AHK-Cu are two peptides people frequently compare. GHK-Cu is a copper peptide widely used in skincare for wound healing, skin rejuvenation, and anti-aging. It works by delivering copper to skin cells and activating the processes the body uses to… AHK-Cu is a copper-binding peptide people use for hair growth and scalp health. Limited research suggests it may stimulate hair follicle activity in lab settings. No FDA-approved use; evidence comes…
| GHK-Cu | AHK-Cu | |
|---|---|---|
| What it is | GHK-Cu is a copper peptide widely used in skincare for wound healing, skin rejuvenation, and anti-aging. It works by delivering copper to skin cells and activating the processes the body uses to… | AHK-Cu is a copper-binding peptide people use for hair growth and scalp health. Limited research suggests it may stimulate hair follicle activity in lab settings. No FDA-approved use; evidence comes… |
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| How it works | It works by delivering copper to skin cells and activating the processes the body uses to repair and rebuild tissue. Not FDA-approved as a drug; extensively used in cosmetics and widely studied. | Limited research suggests it may stimulate hair follicle activity in lab settings. No FDA-approved use; evidence comes from one published study and is at an early stage. |
| Common dose | 1-2 mg, subcutaneous injection, daily | 1-2 mg, topical (dissolved in serum, lotion, or carrier solution), once or twice daily |
| FDA status | Not FDA-approved as a drug; most applications remain unapproved. Multiple review articles note GHK-Cu is not FDA-approved and lacks rigorous clinical trial validation. One review notes GHK-Cu is… | Not stated in reviewed literature — requires manual verification |
| Evidence level | Mixed | In vitro only |
| Full GHK-Cu page → | Full AHK-Cu page → |