how fast does glutathione lighten skin permanently works for by reducing melanin production, which helps the skin and reduce pigmentation. It acts as an antioxidant, protecting the skin from oxidative damage, which can cause aging and Glutathione for Skin Lightening :

Claims peptides such as GHK-Cu, BPC-157 and TB-500 can help regenerate and repair tissue and calm inflammation are based on a handful of laboratory studies in cells or animals, not humans

10.1016/j.jbc.2021.100429 J

(5-8) Crucial Role in Decreasing Inflammation As part of its role as an immune booster, glutathione not only supports immune cells but it also helps to control inflammatory cytokines - the signalling proteins that encourage inflammation in response to a threat

Some proteins may require addition of protease inhibitor cocktail, EDTA, 1-5 mM DTT, 1 % BSA, or detergents such as 0.5-1 % Igepal CA-630 (Nonindet P-40) or 0.5-1 % Tween-20

Alternatively, you can layer it carefully with your favorite non-acidic moisturizers for added comfort