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Ask for a Certificate of Analysis for the specific batch you are buying, not a generic template

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Product Features: Glutathione and astaxanthin provide a good source of antioxidants Nicotinamide helps maintain skin health Vitamin C supports formation, skin firmness and healthy collagen, bright skin Vitamin C and vitamin E help reduce free radical damage to body cells How To Use One capsule daily, during or immediately after a meal, or as directed by a healthcare professional

Once a desired pigmentation level is achieved, the same PK/PD logic supports backing off to a maintenance schedule, often weekly or even less, while watching how quickly the tan fades