Hormone-related observations provide a hypothesis for research, not evidence of therapeutic effectiveness
10.1016/j.freeradbiomed.2004.06.011 [DOI] [PubMed] [Google Scholar] Estrela J.M., Ortega A., and Obrador E
Topical vs Injectable Tolerability Topical GHK-Cu appears better tolerated than injectable forms, with topical side effects typically limited to mild redness, itching, or irritation at application site and rare copper uglies phenomenon (anecdotal accelerated skin aging appearance due to potential MMP upregulation, not well-studied)
, its rate of synthesis and rate of degradation in hepatocytes)
Often used in wellness and beauty supplements, it plays a vital role in maintaining overall health and protecting against cellular damage
It also activates SIRT1, aka the longevity gene, suggesting its essential role in anti-aging