Clinical trials on skin have demonstrated improvements: In one study, GHK-Cu applied to photoaged skin for 12 weeks increased density and thickness while reducing laxity and wrinkles in 71 women
Investigation of the caspase-dependent mitochondrial apoptotic pathway in mononuclear cells of patients with systemic lupus erythematosus
Like other small peptides, glutathione is degraded by various peptidases including tripeptide aminopeptidases and -glutamyl transpeptidases 1,3
Marijn M, Brouwers, Wouter FJ, Feitz LAJ, Roelofs, Lambertus ALM, Kiemeney, Robert PE, de Gier, Nel Roeleveld (2006) Risk factors for hypospadias
These differences in study length make direct efficacy comparisons challenging, as weight loss patterns may differ over time
Premature Graying of Hair: Review with Updates Deepika Pandhi, October 2013