s acetyl glutathione vs l glutathione S-Acetyl with NAC Supplement S-Acetyl-L-glutathione:Preparation; Benefits and Side effects_Chemicalbook

So, when we say glutathione is reduced, we mean it can remove oxygen or ROS hence its being an "antioxidant" after which the glutathione becomes oxidized

Hsieh, M.-J., Liu, H.-T., Wang, C.-N., Huang, H.-Y., Lin, Y., Ko, Y.-S., Wang, J.-S., Chang, V

Helps attract and retain moisture, supporting hydrated, healthier-looking hair

No side effects have been reported yet

Answer: Longevity depends on more than treating visible symptoms

In another set of experiments, ASA treatments (5 or 10 mol/ml ASA 48 h) were performed in GSH-depleted cells (BSO treatment for 18 h) which were then treated with 10 mM NAC (dissolved in DMSO, then diluted with cell culture medium to the required concentration keeping the DMSO concentration not more than 0.1%) for 2 hr before the addition of ASA for 48 h to manipulate cellular GSH pools