Skin and hair peptides

GHK-Cu

A copper-binding tripeptide discussed in skin biology, cosmetic formulations, and wound-healing research.

Copper tripeptide-1Glycyl-L-histidyl-L-lysine copper

Concise answer

What is GHK-Cu?

GHK-Cu is a copper-binding tripeptide with topical cosmetic and preclinical wound-healing research. It is not an FDA-approved systemic anti-aging treatment.

Definition

What It Is

GHK is a naturally occurring tripeptide that can bind copper. In skincare it is usually discussed as copper peptide or copper tripeptide-1.

Status

Legal and Regulatory Notes

FDA: Not FDA-approved as a systemic drug for anti-aging, wound healing, or hair restoration.
Research: Mechanistic and cosmetic literature exists, but claims vary by formulation, route, concentration, and study quality.
Sport: Not presented here as a performance compound; athletes should verify rules for any product they use.

Research map

How GHK-Cu Is Being Studied

Skin appearance, firmness, and photoaging-related endpointsCollagen and extracellular matrix signalingWound-healing and tissue remodeling modelsTopical delivery and formulation stability

People

Human Research

Human cosmetic data are more relevant than systemic claims, but many studies are small, formulation-specific, or commercially influenced.

Models

Animal and Cell Research

Preclinical research explores wound-healing and tissue-remodeling mechanisms, which should not be overread as proven medical benefit in people.

Safety

Known Risks and Side Effects

Skin irritation or sensitivity with topical products
Copper-related concerns if used in ways not supported by product labeling or clinical supervision
Systemic or injectable claims are not validated by cosmetic research
Quality and purity concerns for research-use products

Compliance

Interpretation Guardrails

Cosmetic use and medical treatment claims are different regulatory categories.
Avoid interpreting skincare marketing as evidence for systemic therapy.
Talk to a dermatologist or licensed clinician for skin disease, hair loss, wounds, or infection.

Internal links

Related Battles and Profiles

Battle GHK-Cu vs Matrixyl A copper-binding tripeptide versus a topical signal peptide family in the skincare evidence arena. Profile Matrixyl A topical cosmetic peptide family associated with extracellular matrix signaling and appearance-related skin endpoints. Profile BPC-157 A synthetic 15-amino-acid research peptide with extensive animal data and very limited human evidence. Profile TB-500 A synthetic fragment associated with thymosin beta-4 biology, with evidence often extrapolated from the parent molecule. Guide Skin and Hair Peptides Cosmetic peptides ranked by evidence type, formulation dependence, and overclaim risk. Guide Longevity Peptides A hype-resistant guide to longevity claims, biomarkers, and what evidence is missing.

FAQ

Common Questions

Is GHK-Cu a drug?

PeptideWars does not classify GHK-Cu as an FDA-approved systemic drug. It is commonly discussed in cosmetic and research contexts.

Does GHK-Cu reverse aging?

No reliable source proves that GHK-Cu reverses aging. Some research discusses skin biology and appearance-related endpoints, which is a narrower claim.

Is topical GHK-Cu the same as injectable GHK-Cu?

No. Evidence and risk depend heavily on route and formulation. Cosmetic topical data should not be generalized to injectable use.

Sources

Citations and Official References

Editorial Review

Written by the PeptideWars Editorial Team. Medical reviewer placeholder: licensed clinician review should be completed before production launch. Last updated May 6, 2026.