Glutathione:

Glutathione neutralizes different types of free radicals that cause cellular and tissue damage. It also aids in detoxification in the body by neutralizing the free radicals that are produced during metabolism of various organ systems.   Anticancer properties of this compound have been found in research. For example, it affects p53 expression, which is a protein linked to multiple cancer signaling pathways

Glutathione has been found to manifest an anti-melanogenic role, which can aid in skin lightening and brightening. It does this by inhibiting the tyrosinase enzyme which has a role in melanin/pigment production. It’s benefits in skin anti-aging and brightening has been found in various studies published.