should you take vitamin c with glutathione or C? Which is better for dark spots and dull skin Glutathione vs Vitamin C: Which
Description
Its not just not FDA approved

doi:10.1053/j.gastro.2010.11.056 7

Cysteine is a sulfur amino acid, which might imply that consuming sulfur-rich foods, especially those containing the sulfur amino acids, may also support glutathione synthesis [51,52]

This work was supported by the National Natural Science Foundation of China (32371255 and 32071203 to LHZ, 32130022 and 82121005 to HEX, 82404881 to QNY)

doi: 10.1021/jf051985c
Glutathione reduces oxidative stress on skin cells, with a 2014 study in Oxidative Medicine and Cellular Longevity noting its photoprotective agent in skin cells, suggesting its importance in skin cancer prevention