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Study participants were placed on 0.81 millimoles per kilogram (mmol/kg) of cysteine and 1.33 mmol/kg glycine daily for two weeks
Reduced L-Glutathione
They feed back to the brain and to each other, so one abnormal result can reflect an upstream or downstream issue rather than the whole story
Results can vary depending on the individual's skin type, the specific product used, and consistency of use
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