does glutathione brighten your skin is a natural antioxidant body makes, and it can influence melanin production — which is why it’s sometimes marketed for brightening., Oral supplements are mostly broken down in face brightening and hydration Glutathione for Skin Lightening :

Additionally, alpha lipoic acid may help regenerate other antioxidants in the body, enhancing overall antioxidant capacity and promoting better metabolic function

Mechanistic Research Perspective NNMT enzyme interaction research Cellular metabolism pathway analysis NAD biosynthesis pathway investigation Small-molecule intracellular signaling research Metabolic regulatory pathway studies Primary Research Applications Cellular Metabolism Studies: Researchers use 5-Amino-1MQ to explore metabolic signaling pathways and enzymatic regulation within controlled laboratory environments

10.1042/EBC20190016 9 GusarovI.ShamovskyI.PaniB.GautierL.EreminaS.Katkova-ZhukotskayaO.et al (2021)

This treatment also improves nail and skin health