Remember that cysteine is one of the precursors to glutathione, so the idea is that ingesting NAC as a supplement indirectly increases your glutathione levels
Glutathione, however, is essential for several other functions within our body, such as being our main detoxifying agent in neutralizing the toxic substances that accumulate and strongly supporting all our immune defense lines
Once melanin production is reduced, it can lead to a more even skin tone by preventing the overproduction of melanin in response to cellular damage
It is inherently difficult to examine health benefits of a product on healthy people [26] (e.g., if biomarkers of oxidative stress are not already elevated, it may be difficult to further reduce these values)
Glutathione as a skin-lightening agent: Facts, myths, evidence and controversies