GHK-Cu

Copper Peptide · Glycine-Histidine-Lysine-Copper · GHK · Lamin

Also known as the "glow peptide"

A naturally occurring copper-binding tripeptide studied for collagen synthesis, skin repair, wound healing, and hair growth.

Not yet available

Pending FDA approval

Coming Soon Once GHK-Cu is FDA approved, you’ll be able to get a prescription and compare prices here on Rx.com. Browse available medications →

GHK-Cu (Glycine-Histidine-Lysine-Copper) is a small copper-binding tripeptide that occurs naturally in the human body — found in plasma, saliva, and urine — and has been studied since its discovery in 1973 by Dr. Loren Pickart at the University of California, San Francisco. Plasma levels of GHK-Cu start high in young adulthood and decline steadily with age, which is one reason researchers believe it plays a role in the body's ability to repair and renew tissue. GHK-Cu is unique among the peptides on this page: it is already found in thousands of topical skincare products sold today as a cosmetic ingredient, where no prescription is required. As an injectable or systemic therapeutic, however, GHK-Cu remains investigational — it is not FDA approved as a drug — and is not currently available to purchase or be prescribed through Rx.com.

What GHK-Cu is being researched for

People most often look into GHK-Cu in connection with the areas below. These are research directions — not approved or proven treatments.

Skin collagen & elastin synthesis
Wound healing & tissue repair
Hair follicle stimulation & hair growth
Skin tightening & anti-aging research
Anti-inflammatory & antioxidant effects

What is GHK-Cu?

GHK-Cu is made of three amino acids — glycine, histidine, and lysine — naturally bound to a copper ion. This copper is what makes it distinctive: copper is an essential mineral that acts as a cofactor for many enzymes involved in collagen production and tissue repair. The tripeptide acts as a "carrier," delivering copper precisely where cells need it. Because GHK naturally occurs in the body and declines with age (from roughly 200 ng/mL in early adulthood to around 80 ng/mL in later life), researchers have studied whether supplementing it could slow or partially reverse some age-related tissue changes.

How is GHK-Cu thought to work?

Laboratory and animal research has described several pathways. GHK-Cu is thought to signal skin fibroblasts (the cells that build collagen and elastin) to increase production, and to activate enzymes — such as lysyl oxidase — that cross-link collagen fibers into a stronger, more organized structure. It is also described as supporting angiogenesis (new blood-vessel growth) needed for wound repair, stimulating hair-follicle cells, and acting as an antioxidant that helps neutralize oxidative stress in aging tissue. Research suggests it may also influence gene expression across hundreds of genes involved in inflammation, growth, and repair. Most of the mechanistic evidence comes from cell and animal studies; large human clinical trials are still limited.

What is GHK-Cu being researched for?

The primary areas of published scientific interest include:

Skin repair and anti-aging — reducing fine lines, improving skin density, and supporting the healing of sun-damaged or aged skin.
Wound healing — accelerating the repair of cuts, burns, and chronic wounds in early laboratory and animal models.
Hair growth — stimulating hair-follicle cells, with some small human studies looking at thinning hair.
Lung and systemic repair — emerging research has explored its role in lung tissue and broader anti-inflammatory effects.

These are research directions, not FDA-approved treatments. Rx.com makes no efficacy claims.

Topical skincare vs. injectable — what is the difference?

This is the most important distinction to understand with GHK-Cu:

Topical serums and creams containing GHK-Cu are legal, widely sold cosmetic products. You can find them at most major beauty retailers without a prescription. Because they are cosmetics, the FDA does not evaluate their effectiveness for healing or anti-aging — topical peptide claims are cosmetic claims, not drug claims.

Injectable GHK-Cu — sold in the wellness and longevity space as a "research peptide" — is a different matter. Injectable use raises far higher safety, purity, and regulatory considerations. These products are not FDA-approved as drugs, are not quality controlled the way pharmaceuticals are, and should only be considered under the supervision of a licensed healthcare provider. Rx.com does not sell or prescribe injectable GHK-Cu.

Is GHK-Cu FDA approved as a drug?

No. GHK-Cu is not FDA approved as a prescription drug. It is used legally as an ingredient in cosmetic products, but cosmetics are not drugs in the regulatory sense — the FDA does not review their efficacy. As an injectable or systemic therapy, GHK-Cu is investigational and not currently available to purchase or be prescribed through Rx.com. If GHK-Cu or a related formulation earns FDA drug approval in the future, Rx.com plans to help eligible patients compare prices and access it safely — which is exactly why this page exists today.

Frequently asked questions

Why is GHK-Cu called the "glow peptide"?

GHK-Cu earned the "glow peptide" nickname in the skincare community because of its studied role in supporting collagen, elastin, and skin repair — qualities that translate to firmer, brighter-looking skin. It is one of the most researched copper peptides in cosmetic science. The nickname is informal and does not reflect any FDA-approved cosmetic or therapeutic claim.

Can I buy GHK-Cu without a prescription?

Yes — as a topical cosmetic serum or cream. GHK-Cu is a legal cosmetic ingredient found in many skincare products sold without a prescription. Injectable GHK-Cu is a different category entirely: as a drug, it is not FDA approved and should only be used under a licensed provider's care. Rx.com does not sell either form.

Can I get GHK-Cu through Rx.com?

Not yet. GHK-Cu is not FDA approved as a prescription drug and is not currently available through Rx.com. This page is educational only. If it earns FDA approval, Rx.com will help you compare prices and access it.

What does GHK-Cu do for skin?

Research describes GHK-Cu as signaling fibroblasts to produce more collagen and elastin, supporting skin repair, acting as an antioxidant, and potentially improving firmness and fine lines. These are research findings, primarily from cell and animal studies, and are not FDA-approved drug claims.

Is GHK-Cu good for hair growth?

Some small studies and laboratory research have explored GHK-Cu's effect on hair follicle cells. It is an area of active research interest, but the evidence in humans is still limited. No use for hair growth is FDA approved.

How does GHK-Cu compare to other peptides like BPC-157 or TB-500?

BPC-157 and TB-500 are primarily studied for musculoskeletal recovery and gut health. GHK-Cu is primarily studied for skin repair, wound healing, and collagen synthesis — though all three share broad "tissue repair" themes. GHK-Cu is also distinctive for already being widely available as a topical cosmetic ingredient, something the other peptides are not.

When will GHK-Cu be available as a prescription drug?

There is no confirmed FDA approval timeline. GHK-Cu remains investigational as a systemic therapeutic. You can check back here for updates as the research landscape changes.

Medical disclaimer: The information on this page is provided for general educational purposes only and is not medical advice. This peptide is not approved by the U.S. Food and Drug Administration (FDA) and is not currently available to purchase or be prescribed through Rx.com. Statements here have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Always talk to a licensed healthcare professional before considering any new therapy.