AHK-Cu
A copper tripeptide (Ala-His-Lys) related to GHK-Cu, sold mainly for hair growth.
Cosmetic ingredient in hair serums; injectable forms not approved.
Used for
- Thinning hair (topical)
- Skin and collagen, like GHK-Cu
How it works
Delivers copper to the hair follicle; in lab work it helped the cells at the base of the follicle (dermal papilla) grow and survive longer.
What the research shows
- In human hair follicles kept alive in the lab, AHK-Cu lengthened the hairs and slowed dermal papilla cell death.
- No controlled trials in people, topical or injected.
Dosing
Dosing isn’t listed on the public site. In the app, each published option is shown with its source (a drug label, a clinical guideline, a trial or community reports) and can be turned into a protocol you review.
Work out the units to draw for your vial →Side effects
- Scalp irritation
- Injection-site stinging
Cautions
- Adds copper: take care with Wilson’s disease or high copper.
- Research-chemical vials have no quality control: purity, dose and sterility vary. Third-party testing helps but is no guarantee.
Storage
Unmixed powder: freezer or fridge, away from light.
Once mixed with bacteriostatic water: fridge; the common rule is to use it within 28 days.
There is no label or published stability data for this one, so treat these as habits, not limits.
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Reference only, not medical advice. Written for this app from the cited research. Doses marked community-reported are not from trials.