From how to shave butt hair safely to scientific benefits of its existence, here's everything you need to know Though everyone has butt hair, it's funny that hair can be so stigmatized. Another temporary removal option is waxing, which pulls hair out by the roots, so this method will typically last longer than just shaving. Butt hair exists for a real reason. Advertisement - Continue Reading Below. Eyelashes, as you might know, serve the useful purpose of keeping bugs, dust, and other particles out of your eyes; armpit hair prevents your arms from chafing against your sides.