AHK-Cu
ahk copper
Copper tripeptide focused on hair and scalp. Comparison with GHK-Cu; tracking hair/skin changes.
- Half-life
- 30 min
- Out of system
- ~3 h
- Route
- Subcutaneous
- Level
- Beginner
Very short-acting — protocols dose 1–2× a day. After the last dose, roughly 97% has cleared in ~3 h (five half-lives) — the window that matters for washouts, bloodwork and surgery.
What AHK-Cu is used for
- Copper tripeptide focused on hair density and scalp health
- Complements GHK-Cu for skin/hair protocols
How it's typically used
Cosmetic: topical daily. Research subq: ~1 mg daily.
What to watch for
- Limited human evidence; topical use has the most support
- Skip if copper-sensitive
- Injectable carries irritation/allergy risk
About Skin, hair & aesthetic
- What they are
- Skin, hair, and pigmentation compounds — some injected, some formulated into topicals.
- How they're run
- Topicals go on clean skin daily; injectables run in short courses. Either way the timescale is months.
- What to watch
- Melanocortin compounds darken existing moles and can trigger nausea and flushing — get a skin check before and during. Topical peptides are cosmetic and act only where applied.
Full guide
AHK-Cu: A Tracking Guide for a Copper Tripeptide
What AHK-Cu is, how it compares to GHK-Cu, and how to track hair, scalp, and skin changes if you choose to use it.
Other skin, hair & aesthetic
Peptid AI is an educational and self-tracking tool — not a medical service, and not a vendor. Nothing here is medical advice, a prescription, or an endorsement. Doses reflect what is commonly reported in research literature; they are not recommendations. Many compounds listed are experimental, not approved for human use, and/or controlled substances that are illegal to possess without a prescription in many countries. Always consult a qualified physician before starting, changing, or stopping any protocol.