Pimples inside the hair may be caused by folliculitis or acne, which can be eliminated through the use of anti-infective drugs and anti-inflammatory, oil secretion regulating drugs. 1. Folliculitis: caused by bacterial infection, anti-infective drugs can be used: such as fusidic acid ointment, Pepto-Bismol ointment, to inhibit and kill the scalp has been the role of bacterial infection; caused by fungal infection can be used to amorphophallus ointment and other medications, pay attention to local hygiene. 2. acne: lighter patients can use fusidic acid cream, vinpocetine cream and other anti-inflammatory, dissolving keratin treatment, heavier patients can take doxycycline, isotretinoin and other treatments to help eliminate, pay attention to ensure that the sleep, light diet, local cleaning. If you find a pimple inside your hair, it is recommended to go to the dermatology department and use medication under the guidance of a physician, do not use your own medication.