Two. Serums: A serum with vitamin C or expansion factors or peptides might be better in the morning, under sunscreen. At night, retinol or prescription retinoids work best. See our articles on the best face serums for every skin variety and the best serums for oily skin. Superior Housekeeping participates https://face-bleach75208.blogpostie.com/51822111/pigment-peel-no-further-a-mystery