Unlike other hair removal methods, threading uses a single twisted strand of cotton to remove unwanted hair. Both threading and tweezing are chemical-free and work by targeting single hairs, but waxing and epilating can remove multiple hairs in one go. Threading, waxing, tweezing, and epilating all remove hair from the root, but it will regrow in 2-4 weeks. Laser hair removal is the only permanent hair removal method.