liposomal vs standard oral glutathione bioavailability comparison Absorption, Safety, and Detoxification Effects of Oral delivery of glutathione: antioxidant
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USA 99 , 30473051 (2002)

they penetrate deep into the epidermis and dermis, triggering inflammatory cascades and oxidative stress that compromise cellular function
But just like other antioxidant supplements, NAC will only help you if your glutathione levels are already low, so dont bother supplementing without first focusing in on what you eat to get to a healthy baseline

They might worry that their skin will look worse when they leave the clinic, or that they will open themselves up to potentially negative side effects
