Yes, especially with stronger topical concentrations, oral supplements, or injectable use
One study on glutathione 1200mg IV twice weekly for six weeks found a benefit over placebo for skin lightening, but these benefits faded after six months
The breadth of data was presented during a late-breaking symposium at the 2026 Scientific Sessions of the American Diabetes Association (ADA) in New Orleans, June 58, alongside the simultaneous publication of REIMAGINE 1 and 2 trial results in The Lancet Diabetes & Endocrinology and the REIMAGINE 3 trial results in The Lancet
The transcription factors ATF4 and Nrf2 couple ER stress to a general cellular response that increases the production of glutathione by increasing aminoacid metabolism (Cullinan et al , 2003
cut into half 1250mg, or into 3 parts being 833mg, use one piece per day, then step up over days to weeks
Franco and Cidlowski, 2012