Small bumps on the face may be caused by contact dermatitis, folliculitis, flat warts and other reasons. 1. contact dermatitis: due to contact with some easily sensitized or irritating items after the inflammatory reaction, common in cosmetics, animal hair, pollen, etc., can appear facial rash, itching, peeling and other discomforts. 2. Folliculitis: mainly due to bacterial and other pathogenic infections causing inflammation of the hair follicles, facial rashes, pustules. 3. flat warts: caused by infection with human papilloma virus, due to direct or indirect contact with the infection, manifested in the face, hands and other parts of the flat papules and can be accompanied by itching. There may be other reasons for the small bumps on the face, it is recommended to go to the hospital, a clear diagnosis, symptomatic treatment.