The reason for more pimples on the head depends on which kind of pimple is: 1, bacterial infection resulting in folliculitis, oral rosmarinic acid capsules, rubbing fusidic acid ointment on the affected area, paying attention to head hygiene, washing hair with sulfur soap every day to keep the scalp clean and dry. 2, genetics, usually staying up late for a long time, eating sweets, too much greasy food, resulting in a large amount of head oil secretion, forming seborrheic dermatitis of the head, with oozing, crusting, peeling and other symptoms. If you have a lot of sweating in the summer, the head sweat is not excreted properly and red pimples of pinpoint size appear, consider prickly heat, cut your hair short or shave it off, put prickly heat powder on the affected area, go outdoors less often, open the windows and keep the room temperature at 24 degrees. This can be prevented by keeping the room temperature around 24 degrees.