Statements Author contributions YL: Writing original draft, Writing review & editing, Software
GHK-Cu is regulated as a cosmetic ingredient, not an approved drug for therapeutic claims, and regulatory status of both the peptide and needling devices varies by jurisdiction
10.1210/endo.137.5.8612534 73 HansenK
Honestly, though, this is a critical point often overlooked
Acta Nutr Sin 24(2):189191 Kang WS, Jung E, Kim J (2018) Aucuba japonica extract and aucubin prevent desiccating stress-induced corneal epithelial cell injury and improve tear secretion in a mouse model of dry eye disease
It should be measured rather than supplemented indiscriminately