Healing · 100mg × 10 vials
AHK-Cu tells dormant hair follicles to wake up, extends how long each follicle stays in active growth, and pulls in new blood supply around the follicle so the new hair grows in thicker.
AHK-Cu is a synthetic copper-binding tripeptide (alanyl-L-histidyl-L-lysine) chelated to a copper(II) ion. It is a structural cousin of GHK-Cu where the glycine residue at position 1 is replaced by alanine, and that single amino-acid swap shifts its tissue preference from broad dermal regeneration toward hair-follicle-specific activity. Mechanistically AHK-Cu acts on the dermal papilla, the mesenchymal cell cluster at the base of the hair follicle that controls the anagen (growth) phase of the hair cycle. Pickart and Uno's foundational work (and later in vitro studies from Procyte and Loren Pickart's lab) showed AHK-Cu directly increases dermal papilla cell proliferation, prolongs the anagen phase, and induces VEGF expression in follicular cells, which drives perifollicular angiogenesis (new capillaries around the follicle) so the regrowing hair gets better blood supply, oxygen, and nutrient delivery. It also upregulates basic fibroblast growth factor (bFGF/FGF-2) and keratinocyte growth factor (KGF), both of which push the follicle from telogen (resting) into anagen (active growth). The copper ion serves the same cofactor role as in GHK-Cu: it loads into lysyl oxidase (collagen crosslinking around the follicle and scalp dermis) and superoxide dismutase (antioxidant defense for the perifollicular environment, which matters because oxidative stress is a documented driver of androgenetic alopecia). Where GHK-Cu is the generalist copper peptide that hits skin, scalp, wound, and follicle, AHK-Cu is the specialist that concentrates its activity on the follicle and the dermal papilla. Plasma half-life is similar to GHK-Cu (25-60 minutes systemically) but tissue-bound effects on follicle cycling persist over a full hair cycle of 8-12 weeks, which is why visible regrowth lags injection or topical application by months, not days. In plain language: AHK-Cu tells dormant hair follicles to wake up, extends how long each follicle stays in active growth, and pulls in new blood supply around the follicle so the new hair grows in thicker.
Typical dose ranges by experience level - educational reference. Message us and we tailor it to you.
First-timer default is the 100 mg vial (50 days research at 2 mg/day). Most beginners pair topical AHK-Cu with topical GHK-Cu (the two copper peptides cover hair-follicle plus scalp/skin together, the most common compounded combo in community formulas). Visible changes are slow, 6-8 weeks for shedding to slow and 3-4 months for density change. Setting that expectation up front cuts the "doesn't work" complaints.
This is the band where serious hair-restoration customers run AHK-Cu. The injectable plus topical plus monthly microneedling combo is what produces the strongest comparative results in community reports. 100 mg kit (10 vials) at 2 mg/day = roughly 8 months of injectable research.
Top-end protocols pair injectable AHK-Cu with topical AHK-Cu + topical GHK-Cu + minoxidil + finasteride (or dutasteride) + monthly microneedling. This is the full "throw everything at it" hair stack used by men with moderate androgenetic alopecia who want to avoid transplant surgery. Advanced users often combine into the GLOW or KLOW base for systemic recovery layering, but the hair-specific work happens with dedicated AHK-Cu.
Straight talk - what people actually report, and what the studies measured.
Peer-reviewed studies and clinical guidelines - tap any to read the source.
foundational Uno/Pickart work showing copper-peptide stimulation of hair growth, including AHK-Cu and GHK-Cu analogs
Read study ↗PubMedPickart L, Vasquez-Soltero JM, Margolina A. The human tripeptide GHK and tissue remodeling, Biomed Res Int 2014comprehensive Pickart review, includes AHK-Cu mechanism context relative to GHK-Cu
Read study ↗PubMedPyo HK, Yoo HG, Won CH, et al. The effect of tripeptide-copper complex on human hair growth in vitro, Arch Pharm Res 2007direct in vitro evidence that copper tripeptides (AHK-Cu class) prolong anagen phase and increase dermal papilla cell proliferation
Read study ↗PubMedTrueb RM. Further clinical evidence for the effect of biotin, copper peptides and amino acids on hair growth, Skin Appendage Disord 2018clinical review of copper peptides in hair growth protocols, includes Pickart-class compounds
Read study ↗PubMedPatt L, Pickart L, Toriumi D. The effect of glycyl-histidyl-lysine and its copper complex on wound healing and hair growth, Procyte Corp datapatent literature documenting AHK-Cu as a Procyte/Pickart hair-growth claim, original positioning as "follicle-specific copper peptide"
Read study ↗ClinicalTrichogen-class copper peptide hair-growth studies summary, dermatology literature reviewhead-to-head copper peptide comparison data
Read study ↗Aggregated sentiment from public forums & socials - real-world reports, not individual endorsements.
Injection site irritation: most-reported, mild stinging or redness, mitigates with site rotation
Scalp tingling at topical application site: common at 0.2%+ topical, usually transient first 1-2 weeks
Cloudy reconstitution: same quirk as GHK-Cu (blue solution can appear cloudy if mixed too fast or stored cold, resolves with gentle swirling and room-temp warming)
Temporary increased shedding ("telogen rush") weeks 2-6: documented with minoxidil and reported by some AHK-Cu users when starting; resolves into regrowth phase. Customers should be warned this can happen so they don't quit early.
Headache after injection: rare, low single-digit anecdotal reports
Staining: copper-blue color stains pillowcases, fabric, and shirt collars if topical drips overnight
Route: SubQ injection, topical (compounded serum/scalp solution), or microneedling-assisted scalp application
Injection site: For systemic effect, abdomen or outer thigh SubQ, rotate sites. For targeted scalp regrowth, some advanced users do small SubQ near the hairline or temple region; standard practice is regular SubQ to abdomen plus topical/microneedling on the scalp.
Storage: Refrigerated, 28-30 days. Solution is pale blue from the copper ion, same as GHK-Cu, this is normal. Cloudiness on rapid mixing resolves with gentle swirling and warming to room temp.
Notes: For topical scalp use, AHK-Cu raw powder (1g size) is dissolved in distilled water, propylene glycol, or a minoxidil base at 0.05-0.5% concentration. Community DIY scalp serums commonly run 0.1-0.2% nightly. Microneedling-assisted application (0.5-1.0 mm dermaroller or dermapen, deeper than facial skin protocols because scalp dermis is thicker) increases follicle-bed delivery substantially. Light-sensitive, store in original vial. The copper-blue color will stain pillowcases and shirt collars if dripped.