Copper peptides

Overview

Copper peptide serums are increasingly marketed on TikTok and Instagram as “nature’s Botox” or alternatives to retinoids. Though this section focuses on topical use, copper peptides may also be marketed as injectables, as discussed in the section on “pinning” practices. Products are frequently promoted for anti-aging, collagen support, skin repair, and hair growth. (1) The most commonly marketed compound is glycyl-L-histidyl-L-lysine copper (GHK-Cu). (1)

In placebo-controlled trials, GHK-Cu has demonstrated improvements in fine lines and wrinkles, skin elasticity, thickness, firmness, and collagen production. (2, 3) However, the evidence remains preliminary and consists of small trials.

Potential dermatologic complications and limitations

Discontinuation of evidence-based therapies

Online claims often exceed available clinical data. Patients may discontinue evidence-based therapies, including retinoids, in favor of peptide-only “natural” regimens.

Irritant dermatitis

Patients may develop erythema, burning, irritation, or dermatitis, particularly when products are combined with multiple active ingredients. (4)

Product variability

Formulation quality, peptide concentration, stability, and ingredient accuracy may vary substantially between manufacturers.

Important history questions

• Are you using peptide-based serums or “natural Botox”?

• Did you stop using prescription retinoids or other therapies, and if so, what concerns influenced that decision?

Counseling considerations

Dermatologists can counsel patients regarding:

• Limited high-quality evidence supporting online claims.

• Importance of maintaining evidence-based therapies.

• Risks of irritant reactions with excessive layering of actives.

• Importance of patch testing when introducing new products.