Vitamin A cream, as a common clinical ointment, is mainly used for patients with psoriasis, including those with periorbital keratosis, vitamin A deficiency, and rough skin. In addition, diseases such as lichen planus can also be used. It is recommended not to use vitamin A cream for a long time, because prolonged use tends to cause local skin irritation. During the treatment period, if skin redness or itchiness occurs, stop using it as soon as possible and switch to some other medication to treat it. When using the vitamin A cream, try to use it every night, because it has a photosensitive reaction, use during the day, after the sun is prone to skin allergic reactions.