Explore GHK-Cu dosage trends, reconstitution volumes, and vial size patterns from anonymized WPA peptide calculator sessions. Real-world copper peptide mixing data.
GHK-Cu is a naturally occurring copper-binding tripeptide studied for its roles in wound healing, collagen synthesis, and anti-aging. This data reveals the dose amounts, vial sizes, and bacteriostatic water volumes researchers most commonly select when setting up their GHK-Cu reconstitution protocol.
GHK-Cu is the copper-bound form of glycyl-L-histidyl-L-lysine — a naturally occurring tripeptide that Loren Pickart first isolated from human serum in 1973 while studying the difference between young and aged plasma's effect on hepatocyte function in culture. The original observation was that something in young serum kept liver cells healthier than the same factor in old serum — and when Pickart worked through the serum systematically, separating its components one by one to identify the responsible molecule, GHK was what he found. Pickart and collaborators later established that GHK has a very high affinity for copper(II), that the GHK-Cu complex is the bioactive form, and that circulating GHK-Cu levels decline substantially with age — from roughly 200 ng/mL in the third decade of life to about 80 ng/mL by the seventh.
GHK-Cu (copper tripeptide-1) is the copper-bound tripeptide most often sourced for skin-remodeling, hair, and wound-healing research. Research-grade material ships as a lyophilized powder reconstituted with bacteriostatic water; it is also a long-standing cosmetic ingredient.
GHK-Cu modulates expression of more than 4,000 human genes in cultured cell lines — including up-regulation of decorin, integrins, and metalloproteinase inhibitors — while delivering bioavailable copper to copper-dependent enzymes such as lysyl oxidase. The net effect in skin models is stimulation of dermal fibroblasts and increased collagen, elastin, and glycosaminoglycan synthesis.
Cosmetic and dermatology research spans photoaged skin (Leyden et al.), post-laser repair, and androgenetic alopecia adjuvant protocols. GHK-Cu is also a long-standing cosmetic ingredient (INCI: Copper Tripeptide-1) used in topical anti-aging formulations. Injectable / research use is far less studied than topical use.
GHK-Cu has a reported half-life of ~1.5 hours, and the dose intervals researchers model most often fall around once daily. Short half-life means daily injections clear almost entirely before the next dose — there is no meaningful systemic buildup. It is catalogued under Skin Peptides on WPA.
9,315 GHK-Cu reconstitution calculations have been logged by the WPA community. The most common dose entered is 2mg (3,196 calculations). The most common bacteriostatic water volume is 3mL. The most popular vial size is 100mg (5,048 sessions). The most common dosing frequency is daily (7x/week) (875 logged protocols), followed by once weekly (359).
These figures come from anonymized WPA peptide calculator sessions.
All figures shown are aggregated from anonymized calculator inputs and are provided strictly for independent laboratory research and educational purposes. They are community usage statistics — not dosing recommendations, and not medical advice.