As a pharmacist, I know this well. However, seeing what an expert who has seen that evidence uses—including the unpublished studies of one unnamed large skin ca

As a pharmacist, I know this well. However, seeing what an expert who has seen that evidence uses—including the unpublished studies of one unnamed large skin care pharma company—carries some weight, at least for me. Alpha-hydroxy acids and retinol have the best evidence overall.