The aestheticians at Yodi Threading Spa keep their spa menu simple. They focus on threading, an ancient hair-removal technique in which a cotton thread rolls and twists over the skin, lifting away hairs in straight, precise lines. For other regions, waxing treatments quickly and ruthlessly exterminate unwanted hair. The staffers also pretty up topside skin with facials and microdermabrasion. While in the hot seat, clients can send their mind wandering while watching shows on a flat-screen TV or hypnotizing themselves in the tall mirrors in front of each seat.