Why is the link between Vitamin C and glutathione levels important in skin lightening?
It’s important because scientists have found out that the way our skin balances between its lighter pigments (pheomelanin) and darker pigments (eumelanin) depends on glutathione, L-cysteine and the TYRP1 enzyme. Since Vitamin C has been scientifically proven to boost gluthathione levels in the blood, we can say that Vitamin C helps to lighten skin color.