What is GHK-Cu?

By The Docket DeskResearched & sourcedUpdated 17 Oct 2026

GHK-Cu is a copper-binding tripeptide widely used in topical cosmetics and studied for skin and wound repair. Injectable use is promoted for anti-aging. It is not an FDA-approved drug.

What the evidence shows

EVIDENCE GRADE · MIXED · TOPICAL BETTER-STUDIED THAN INJECTABLE

GHK-Cu has a body of cosmetic and laboratory research for topical skin effects; evidence for injectable systemic use is weaker. Regulatory status changed in April 2026 (see status box).

Is it legal?

GHK-Cu is not FDA-approved. Its compounding status splits by route: non-injectable GHK-Cu sits in 503A Category 1, inside the FDA’s interim policy, while injectable GHK-Cu is on no list. The FDA will consult its advisory committee on GHK-Cu before the end of February 2027.

FDA approvalNot approved

Compounding · non-injectable503A Category 1 — within FDA’s interim enforcement policy (not an approval)

Compounding · injectableOn no category list since April 2026 — not authorized

Under FDA reviewPCAC · before end of Feb 2027

Use under reviewNot stated — FDA’s notice names no indication

Earliest pharmacy accessNon-injectable: available now under the interim policy · injectable: late 2027 at the earliest, if cleared

Will GHK-Cu become legal in 2026?+

The question has two answers. Non-injectable GHK-Cu already sits in 503A Category 1 and may be compounded under the FDA’s interim policy. Injectable GHK-Cu is on no list, and nothing changes for it before the advisory committee meets, due before the end of February 2027. Even a favorable vote there is a recommendation, not a rule.

Is “research-grade” GHK-Cu the same as a medicine?+

No. Material sold “for research use only” is not made or tested to pharmaceutical standards, is not authorized for human use, and carries no guarantee of identity, purity or sterility. This site does not link to or evaluate these sellers.

Primary sources: FDA 503A interim list (Apr 2026 update) · FDA Advisory Committee Calendar; Federal Register docket FDA-2025-N-6895.

Medical & editorial disclaimer. This article is independent reference information, not medical advice and not a recommendation to use any substance. GHK-Cu is not FDA-approved. Nothing here should be used to obtain, prepare, or self-administer any drug. Talk to a licensed clinician about your health. Peptide Docket is not affiliated with the FDA and does not sell peptides.