Pseudofolliculitis barbae is a foreign body reaction that occurs when arcuate hairs curve upon themselves and re-penetrate the skin. This creates pustules and papules as illustrated on the back of the head of this young man who has shaved his scalp. It particularly happens if the scalp or face are shaved with a straight razor blade. Treatment consists of avoiding a close shave, shaving with an electric razor and applying a depilatory chemical cream. There are a variety of such creams and powders available on the market.