Your prescribing clinician can help sequence and dose them appropriately
On the other hand, topical glutathione offers quick surface-level brightening
Capron A, Riveau G, Grzych JM, Boulanger D, Capron M and Pierce R
It's best to see a doctor for the right diagnosis and treatment instead of just using store-bought treatments

Cystine/glutamate antiporter solute carrier family 7 member 11 (SLC7A11) is a major transporter regulating cysteine in tumor cells and is induced in response to a variety of stimuli, such as oxidative stress and electrophilic compounds ( xCT transcription, which enhance the GSH levels and protect tumor cells against oxidative stress ( + T cells in the tumor stromal region attenuated platinum resistance through STAT1 phosphorylation and xCT downregulation in fibroblasts ( Figure 2 ) ( Figure 2 GSH peroxidase 4 (GPX4) The tripeptide GSH consists of glutamate, cysteine, and glycine and serves as a cysteine storage and transport form ( via chaperone-mediated autophagy ( via glutathione depletion and ROS accumulation ( Hydrogen sulfide H 2 S is produced in mammalian cells by three enzymes, including cystathionine -synthase (CBS), cystathionine -lyase (CSE), and 3-mercaptopyruvate sulfurtansferase (3MST) in mammalian cells