Charge per session
Unlike many other antioxidants that we must consume through our diet, our liver and nerve cells are designed to produce glutathione internally
doi:10.1016/j.rbmo.2020.08.013
In that case, to truly shift skin tone, you may need a holistic plan, such as laser/light radiation therapies or chemical peels combined with topical actives, like niacinamide, vitamin C, retinoids, etc
Additionally, NADPH is used in the visual cycle of photoreceptors for the conversion of the isomerized light-absorbing chromophore retinal back to its native state 32
This supplement version contains a lower dose for a sufficient amount of vitamin C and glutathione, meant for daily maintenance