AHK-Cu
Copper tripeptide that stimulates hair growth and follicle health
Clinical Research Score: 3/5 — Supported by laboratory research on copper peptides for hair growth plus anecdotal cosmetic use; limited clinical data.
Categories: Skin & Hair
What is AHK-Cu?
AHK-Cu is the peptide solution for hair loss — and it works differently from anything else on the market. Rather than blocking hormones (like finasteride) or increasing blood flow (like minoxidil), it directly stimulates the growth centers of hair follicles and extends the active growing phase of the hair cycle.
People report visible results: thinning areas begin to fill in, existing hair grows thicker and stronger, and the overall density of hair improves. Some describe seeing baby hairs sprouting in areas that had been bare for years. The effects are gradual but real — typically visible after several weeks of consistent use.
What makes AHK-Cu appealing is the targeted mechanism and the minimal side effect profile. It's working specifically on the follicle cells, telling them to grow. Many people use it alongside other hair restoration approaches for a comprehensive strategy, but it's effective enough on its own to be worth trying as a first-line approach.
How AHK-Cu works
AHK-Cu stimulates the dermal papilla cells — the specialized cells at the base of each hair follicle that control hair growth. It activates the Wnt/beta-catenin signaling pathway, which is the primary switch that tells follicles to enter and maintain the anagen (active growth) phase. The copper component is essential for several enzymes involved in hair fiber production. The result is follicles that stay in active growth longer, produce thicker hair fibers, and resist the transition to dormancy.
Scientific overview
AHK-Cu (Alanine-Histidine-Lysine Copper) is a copper-binding tripeptide that has shown significant hair growth-stimulating properties. It promotes follicle enlargement, extends the anagen (growth) phase of the hair cycle, and stimulates dermal papilla cells. AHK-Cu also supports scalp health through its anti-inflammatory and wound healing properties.
Dosing
- Starting dose: Topical application 1x daily
- Common dosage range: 1-2 mg subQ per day (or topical application)
- Administration: Subcutaneous, Topical
- Half-life: Variable (topical)
- Frequency: 1-2x daily