glutathione and thioredoxin antioxidant pathways reductases Glutathione Depletion and Stalwart Anticancer

So with a consistent use, your skin tone will be improved eventually

Excessive Sun Exposure UV radiation stimulates melanin production and triggers oxidative stress, which directly opposes the skin brightening effects of glutathione

Penta deca peptide arginate is one of the most versatile stacking candidates because its mechanisms (angiogenesis, anti-inflammation, collagen synthesis, nitric oxide modulation) complement rather than duplicate the actions of many other popular peptides

Overall, multiple factors involved in the regulation and synthesis of amino acids could be subject to potential therapeutic intervention

doi: 10.1038/cddis.2016.493 46 ZhouSJDengYLLiangHFJaoudeJCLiuFY

PMID: 19164203