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Firming and Elasticity: Collagen is a structural protein that provides strength and elasticity to the skin

In this study, we demonstrated that the correction of glycine deficiency with dietary supplements increased the urinary excretion of acylglycine derived from the intermediates of the BCAAs (isobutyrylglycine, tigylglycine, and isovalerylglycine) and fatty acid oxidation (hexanoylglycine)

It shifts melanin synthesis from eumelanin (dark pigment) to pheomelanin (light pigment), which results in a lighter skin tone

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M., Henke, D