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nac n acetylcysteine glutathione has direct antioxidant properties on oxidant species (e.g. OH • ) NAC (Formerly N-Acetyl-L-Cysteine) by Designs
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10.18632/oncotarget.10516 175 ParkS.ChungC

Taken together, this study showed that oral supplementation of low-molecular-weight collagen peptides at 2.5 g per day for 12 weeks significantly improved several skin parameters [44]

8 AlvarezL.GarcaM.RodrguezS.FernndezB.PereiroR.Sanz-MedelA.et al

Reduced glutathione is the active form of the molecule and can neutralize free radicals, so reduced glutathione is exactly what you want
