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What the science actually says Here is where the marketing and the evidence part ways: Metabolism

supports the skin health and wellness, and enhances skin luminescence

Wang W, Yan Y, Guo Z, Hou H, Garcia M, Tan X, et al

Lipotropic compounds including methionine, inositol, and choline play essential roles in the breakdown and metabolism of fats within the liver

Introduction More than 50 years ago, the free radical theory of aging suggested that endogenous oxygen radicals generated in cells were a risk factor for aging-related diseases, and a thiol compound such as cysteine was expected to slow the aging process [1]