The short answer is that glutathione itself is recognized as safe by the FDA, but glutathione IV therapy specifically for cosmetic purposes like skin whitening is not FDA-approved
[DOI] [PubMed] [Google Scholar] 897
Open-access journal combining biochemistry, pharmacology, immunology, and genetics to advance health through functional nutrition
The method can assay GSH in whole blood, plasma, serum, lung lavage fluid, cerebrospinal fluid, urine, tissues and cell extracts and can be extended for drug discovery/pharmacology and toxicology protocols to study the effects of drugs and toxic compounds on glutathione metabolism
Cc bnh l m Glutathione c s dng h tr iu tr: 6.1
All of these together hydrate your skin, protect it from dryness, and keep it looking plump and dewy