ghk-cu plasma levels with age Cooper Peptide: The Complete Skin & Repair Guide (2026) GHK-Cu Peptide Benefits for Women:

For hair growth and thickness Hair regrowth protocol: Dose: 1-2mg per injection Frequency: 3-5x weekly Route: Subcutaneous (scalp injections OR systemic) Duration: 16-24 weeks minimum Scalp injection option: Inject near hairline or thinning areas Multiple small injections (0.1-0.2ml each) 1-2mg total spread across scalp 3-5x weekly Systemic injection (easier): Inject abdomen or thigh (standard SubQ) 2mg 3-5x weekly Works systemically on hair follicles Less technical than scalp injections Expected hair results: Month 2-3: Reduced shedding Month 3-4: Baby hairs appearing Month 6-8: Visible hair thickness improvement Month 12+: Maximum hair growth See our peptides for hair growth guide and peptides for hair loss guide

But the peptide inside is partially or fully inactive

(Bioavailability Explained) Most nootropic peptides degrade completely in the gastrointestinal tractstomach acid cleaves peptide bonds, proteolytic enzymes break down amino acid chains, and first-pass hepatic metabolism converts what little survives into inactive metabolites

It may also affect anti-inflammatory signalling and extracellular matrix regulation