retinol or glutathione which is better The Science Behind Skincare: Collagen, Hyaluronic Acid, & Explained Glutathione + Retinol Whitening Night
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It has demonstrated significant weight loss in test animals

On the other hand, EtOH feeding increased hepatic TG concentration by 50% in WT mice
Biomed Res Int , 2014, 2014: 151479

L-glutathione is the more established choice with extensive research, but its low bioavailability can be a drawback

Krog NH, Engdahl B, Tambs K

doi: 10.1371/journal.pone.0163694 53 KaushikDKBhattacharyaAMirzaeiRRawjiKSAhnYRhoJMet al