vitamin c serum with some positive results [SEP] i normally stick to one brand for my skin care routine but i have wanted to try a vitamin c serum without sticker shock of my normal brand i m using this product for middle age skin collagen loss wrinkles and uneven skin rough patches my skin facial skin is dry very little oil production i m new to vitamin c serums i began using this product daily it dried out irritated my skin i cut back to week after a skin a little break the dryness and irritation went away for those accustomed to vitamin c serums this might not be an issue i also followed the recommendations to refrigerate after opening to prolong longevity vitamin c is very unstable in liquid form i m into naturopathy and clean skin scare products there were no questionable ingredients on the box label via ewg skindeep website i ve researched different forms of vitamin ca slight odor i can t placenot a significant difference in wrinkle improvement beginning of smile lines chin and forehead wrinkles no feurlic acid this has been shown to work synergistically with vitamin c lasts months and needs refrigeration expiration date is on box since very little is needed and use is week i expect it will expire before all product is used would love to see this in powder form for longevityconclusion a lot of thought was put into formulating and bottling this product if opting for serum over powdered vitamin c this is a good option i m always hesitant to try products that are not ewg verified but the ingredients listed received a good score on ewg skindeep database it just takes a little more time to to investigate each ingredient