Mechanistically, GHK-Cu counteracts UV-induced damage through multiple pathways: suppression of UV-stimulated MMP-1 expression prevents ongoing collagen degradation, enhancement of collagen synthesis repairs existing deficits in dermal matrix density, and antioxidant properties reduce accumulation of oxidatively modified proteins and lipids
First, a bacterial reverse mutation test (Ames test) assessed AOD9604s mutagenic potential using four histidine-dependent auxotrophic mutants of Salmonella typhimurium (TA1535, TA1537, TA98, TA100) and one tryptophan-dependent auxotrophic mutant of Escherichia coli (WP2 uvrA), using both plate incorporation and pre-incubation methods at doses of 0, 1.6, 8, 40, 200, 1,000, and 2,000 g AOD9604/plate
There is not enough safety data on topical GHK-Cu for pregnant or nursing individuals
Antibiotics, 11 (3), 419