After a sebaceous nevus is removed from the head, hair will not normally grow back as there are no hair follicles. The main treatments for sebaceous nevus are cryotherapy, laser treatment and surgery. The first two treatments have a certain risk of recurrence and are more troublesome to take care of. Surgery is the most thorough treatment, but after surgery, hair will not grow back in the surgical area because the skin follicles are removed together during the surgery. A sebaceous nevus is a misshapen tumor composed of sebaceous glands and is a benign tumor of the skin attachments. It is relatively common, often develops at or shortly after birth, and is found on the head, face and neck, especially on the scalp. It is usually treated with surgery, and the incision is small and usually does not affect aesthetics. If you experience any discomfort after the removal of a sebaceous nevus on the head, it is recommended that you go to the hospital in time for regular treatment.