Question: what is the best vitamin c for the skin?
Answer: Courtest of brand. 1/19. La Roche-Posay Vitamin C Serum. The name of La Roche-Posay's Vitamin C Serum is as straightforward as it gets, unmistakably touting the formula's 10-percent ascorbic acid. ... 
Courtesy of brand. 2/19. BeautyStat Universal C Skin Refiner.