history of glutathione File:Glutathione reductase.png - Wikimedia Commons

Six L68QhCC human carriers taking oral NAC had skin biopsies obtained to determine if hCC deposits were reduced following NAC treatment

It is a popular choice for wellness-focused patients in Detroit and a convenient add-on for those supporting recovery after procedures, facials, and aesthetic treatments

Fourteen reported subjective improvement, but there was no control group, no blinded assessment, no objective functional endpoint and no follow-up imaging endpoint [5]

Clinical Evidence in Humans The topical evidence base is unusually robust for a research peptide: Facial aging study (71 women, 12 weeks): A GHK-Cu facial cream documented increased skin density and thickness, reduced laxity, improved clarity, and reduced fine lines and depth of wrinkles (PMID 26236730)