american academy of dermatology position glutathione skin lightening for How The Skin Bleaching Industry

doi: 10.1038/s41380-020-0797-2, 35

Classification of antioxidants Guttering and Halliwell classified the antioxidants into three categories: primary, secondary, and tertiary antioxidants [11]

Yes, but its important to have a plan in place to maintain your results

However, certain circumstances may warrant testing including pre-existing liver or kidney conditions where monitoring organ function during therapy provides appropriate oversight, specific health concerns that might benefit from objective biomarker assessment, desire to objectively measure oxidative stress markers or glutathione status before and during therapy, and medical conditions requiring monitoring for safety reasons