GHK-Cu
A copper-binding tripeptide central to tissue regeneration and skin repair.
Research-only·Regulatory status as of May 2026
Relevance for women
Strong topical/cosmetic evidence for skin firmness, hydration, and post-procedure recovery. Injectable forms were placed in FDA Category 2 in 2023 and remain under review as of May 2026.
Articles on GHK-Cu
Compounded vs. Research Peptides: What's Legal and What's Safe in 2026
The difference between a compounded peptide prescription and a gray-market 'research' peptide is the difference between regulated and unregulated. Here's what changed in 2026.
Peptides for Skin & Collagen: GHK-Cu and What It Does
GHK-Cu is one of the most-searched skincare peptides. Here's what the research shows for skin, collagen, and aging — and the difference between topical and injectable.
What Are Peptides? A Woman's Guide to Hormone & Wellness Peptides
A clear, evidence-based guide to peptides for women — what they are, which ones have real research behind them, and what to know before considering peptide therapy.
Providers that offer GHK-Cu
- 4.5/5
Evergreen Women's Health
Strongest fit for perimenopausal women seeking continuity of care — pairs hormone testing with peptide protocols.
- 4.2/5
Northstar Peptide Co.
Specialty: recovery and skin peptides. Less hormone-focused than competitors, but a tighter, more specialized catalog.
See the full provider comparison for all peptides side by side.