PubMed , European Journal of Epidemiology , vol
The effect is promising, but again, it came from a very small sample, so read it as "deserves more research" rather than "proven for everyone." Several small clinical trials on oral glutathione, some using doses similar to this product, have shown modest reductions in melanin index and improvements in skin brightness over 4 to 12 weeks
Synaptic zinc contributes to motor and cognitive deficits in 6-hydroxydopamine mouse models of Parkinsons disease
Lignitto et al
Information on which supplements are safe and which arent varies and can make things feel even more complicated
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