acyl glutathione eyelid serum super sized duo Neuropeptide Lift Peptide Lip Treatment | DUO

doi: 10.1038/srep10336 82 LinJChenZHuangZChenFYeZLinSet al

Some people use vitamin C in the morning and copper peptides at night to reduce irritation, since layering many actives can sting on reactive skin

Internal factors include the increasing need for glutathione as an important part of various processes in our bodies, such as food for our immune system, recycling of vitamin C, vitamin E and alpha lipoic acid, repairing our DNA, and protecting our cells from oxidative stress, etc

Reviews describe regenerative and protective actions, roles in skin regeneration, and modulation of multiple cellular pathways but this is largely mechanistic and preclinical work, not large human efficacy trials