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It exists in a regulatory gray area as a research chemical, which is why companies like ours provide it exclusively for laboratory and scientific use, not for personal use or athletic performance
Some studies suggest that oral glutathione may offer mild skin-lightening effects in certain groups, but the evidence is still mixed
Clinically Tested
The strongest human clinical evidence is for topical use, including the Leyden 2002 photoaging trial and a 2023 NEEL gel topical study reporting an average 28% increase in skin collagen density at 3 months
10.1038/s41598-017-12855-w 57 LiuR
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