But it's also an island
Tretinoin addresses hyperpigmentation by increasing cell turnover, while glutathione helps by reducing oxidative stress and influencing the melanin pathway, potentially preventing new pigment from forming.
Reed GM, First MB, Kogan CS, Hyman SE, Gureje O, Gaebel W, et al
It contains monoammonium glycyrrhizinate, glycine, and cysteine, and exerts broad pharmacological effects (Figure 2)
Key Takeaways Glutathione is a molecule your body already produces naturally supplementing it is fundamentally different from introducing a foreign compound No credible evidence links oral glutathione supplementation to cancer, weight gain, or vitiligo these are common but unsubstantiated concerns Absorption format is the single biggest factor in effectiveness standard capsules are poorly absorbed