GHK-Cu

What is GHK-Cu?

GHK-Cu is a small tripeptide — glycyl-L-histidyl-L-lysine — bound to a single copper ion. The peptide portion occurs naturally in human plasma, saliva, and urine, where its concentration is highest in youth and declines steadily with age. Because it binds copper with high affinity, it acts as a carrier that delivers this essential trace mineral into tissue.

It is best known as "copper peptide" in cosmetic skincare, where it appears in serums and creams as copper tripeptide-1. In clinical settings it is also studied for its role in wound healing and tissue repair. GHK-Cu is not an FDA-approved drug; when used beyond over-the-counter topical cosmetics — for example in an injectable or higher-strength compounded preparation — it is dispensed only as a pharmacy-compounded product under physician supervision.

How GHK-Cu works

GHK-Cu's central action is stimulating the synthesis and organization of extracellular-matrix proteins. In fibroblasts it upregulates collagen, elastin, and proteoglycans, and it helps regulate the balance of matrix metalloproteinases (MMPs) and their inhibitors (TIMPs) — the enzymes that remodel the skin's supporting scaffold during repair.

The bound copper is not incidental: copper is a required cofactor for lysyl oxidase and other enzymes involved in collagen and elastin cross-linking, so delivering it in this chelated form supports the same repair pathways. GHK-Cu also promotes angiogenesis and has been shown to modulate gene expression broadly, including genes tied to antioxidant defense and tissue regeneration, which underpins its proposed anti-inflammatory and skin-remodeling effects.

What GHK-Cu is used for

What the evidence shows

GHK-Cu has a longer research history than most peptides discussed in this library, with in-vitro and small human studies of topical formulations reporting improvements in skin firmness, elasticity, and appearance, along with clear effects on collagen synthesis and matrix remodeling in cultured cells [1][2].

Mechanistic work — including large-scale gene-expression studies — supports its role in wound healing, antioxidant signaling, and tissue regeneration [2][3]. The strongest evidence is for topical cosmetic use; data on injectable or systemic GHK-Cu in people are limited, so its use beyond skincare rests more on mechanism and safety than on definitive human efficacy trials.

We share this distinction openly. GHK-Cu is a well-characterized topical peptide with a reasonable evidence base for skin, while its compounded injectable use sits in the category of a mechanistically plausible option with limited clinical validation — and that matters when you are deciding whether it fits your goals.

Dosing & administration context

Most GHK-Cu use is topical: it is formulated into serums and creams at cosmetic concentrations and applied to the skin, where effects build gradually over weeks to months of consistent use. This over-the-counter cosmetic use does not require a prescription.

Where GHK-Cu is used in a compounded injectable or higher-strength preparation, the specific strength, route, frequency, and duration are individualized by the prescribing physician — which is why we frame this as clinical context, not a self-dosing guide. Product obtained outside a licensed pharmacy (research-only vials, gray-market powders) carries no guarantee of identity, purity, or sterility.

GHK-Cu is used as an ingredient in over-the-counter cosmetics and is not an FDA-approved medication. Content on this page is clinical context for topical use and physician-supervised, pharmacy-compounded use — not a dosing guide or a substitute for medical advice.

Safety & side effects

GHK-Cu has a long record of use in topical cosmetics with a favorable safety profile; reactions are generally limited to local irritation and are uncommon at cosmetic concentrations. Because it carries copper, formulation strength and appropriate use matter.

For any use beyond over-the-counter topicals we screen before prescribing and monitor throughout a course. The most important safety principle is source control — a pharmacy-compounded product from a licensed 503A/503B pharmacy is a fundamentally different risk profile than a research vial of unknown origin.

How Strong Health prescribes GHK-Cu

At Strong Health, any non-cosmetic use of GHK-Cu is prescribed only after a physician evaluation and a review of your goals and history. Compounded preparations are dispensed exclusively through licensed 503A or 503B compounding pharmacies under physician orders; we do not sell or recommend research-only product.

We treat GHK-Cu as one part of a skin and tissue-support plan rather than a standalone fix, and we are candid about where the evidence is strongest — topical use for skin. Your physician sets the protocol, reviews your response at scheduled intervals, and adjusts or stops treatment based on how you actually respond.

Available in person at our Miami (Brickell) clinic and via telehealth across our service areas.

Frequently asked questions