Glutathione is found in every cell of your body , with the highest concentrations in your liver where detoxification happens
Lutchmansingh, F.K., Hsu, J.W., Bennett, F.I., Badaloo, A.V., McFarlane-Anderson, N., Gordon-Strachan, G.M., Wright-Pascoe, R.A., Jahoor, F
Biochemistry and Molecular Biology of Parasites
Oxidative stress impairs SIRT3 activity and transcription by regulating protein carbonylation and transcriptional function of peroxisome proliferator-activated receptor- coactivator-1, leading to mitochondrial dysfunction and activation of the mitochondrial apoptotic pathway via optic atrophy 1 to induce cell death of vitiligo melanocytes [32]
When administered under medical supervision and in the correct dosage, glutathione injections are generally safe for skin brightening and detoxification