glutathione dr oz Liquid Supplement, Lemon Berry Flavored Acerola Energy Booster w/Zinc, Daily Vitamins & Minerals, Zero Sugar Formulation, Everyday Auto-Immune Support for Adults, 0.34 fl oz, Pack of 30 : Health & manyo Glutathione 7 Dark Spot

And, sure, it looks promising in animals, but lets look at this one study done in humans, published in 2021 in an obscure journal that focuses on alternative medicine

Refrigerate after opening and keep it out of direct light

Reconstituted solution: refrigerate at 28 C

This unique serum contains glutathione, a detoxifying agent, combined with the stimulating benefits of vitamin c

One study found that a 2% concentration of a glutathione cream improved the melanin index (a measure of melanin in skin) on dark spots when used twice a day for 10 weeks

Carnahans journey to becoming a functional medicine leader is anything but conventional