The Glutathione (GSH) + Vitamin C intravenous therapy is the best skin lightening or brightening treatment for darker skin ethnic groups, such as African, Hispanic, Asian Indian, and Filipino, or the Chinese obsession for skin whitening, or simply for anyone whos skin darkened from outdoor activities
These ranges come from animal studies and informal reports
Zhou Y, Long Q, Wu H, Li W, Qi J, Wu Y, et al
With the Guarantee of Safety for Long Term Use, These Personal Care Products Can Be Consumed to Make Your Skin Shine With the Glow of Perfection
and Daiha Shin et al