The ability to grow hair after a boil on the head depends on whether or not the hair follicle is damaged, and it is usually possible to grow hair again. Boils, also known as boils and boils, appear as small red, swollen, hot, painful nodules that gradually swell and sprout yellowish-white pus at the top. When the boil ruptures and oozes pus, it subsides and heals. Boils on the head usually do not damage the hair follicles and can grow hair again when they heal. However, if the hair follicles are damaged due to untimely or improper treatment, it will be difficult to grow hair again. Boils need to be treated with ichthyol ointment, mupirocin ointment and other medications under the guidance of a medical professional.