It stimulates collagen synthesis, modulates the repair genes that naturally decline with age, and controlled studies document real improvements: 20-30% gains in skin firmness and fine lines over 12 weeks at standard concentrations
One in vivo comparison of GHK versus GHK-Cu in rat experimental wounds found that GHK alone had no effect, and only the copper-bound GHK-Cu form produced a statistically significant increase in collagen accumulation evidence that the copper ion itself, not the peptide backbone alone, may be responsible for much of the collagen-stimulating activity
Effect of Endometrioma cystectomy on cytokines of follicular fluid and IVF outcomes
Contact your healthcare provider promptly if you experience persistent or worsening pain at the injection site that does not resolve within a few hours, spreading redness or warmth extending beyond the immediate injection area, drainage or abscess formation, fever or systemic symptoms accompanying injection site reactions, or hardened nodules or lumps that persist for more than a few days
Winn NC, Wolf EM, Cottam MA, Bhanot M, Hasty AH