Blood 86: 258267
In the injection study, three 10-day cycles of 0.16 mg/kg over three months produced significant melanin-density increases by reflectance spectroscopy, with subjects who had the lowest baseline melanin showing the largest relative gains (Barnetson et al., 2006)
To understand how peptides work, it helps to separate therapeutic peptides from the "peptide supplements" sold online
Three vials from the lot were assayed independently rather than one composite sample, returning 99.82%, 99.90%, and 99.89% purity for a reported average of 99.87% by HPLC-UV
Potential Benefits of GHK-Cu Peptide Potential benefits of GHK-Cu peptide are most responsibly grouped by evidence level: topical skin appearance and some wound-healing contexts have human data, while hair growth, systemic anti-aging, organ repair, and broad regeneration claims rely more heavily on preclinical, mechanistic, or indirect evidence [2], [3], [10]