During threading, a thin cotton thread is doubled, then twisted. It is then rolled over areas of unwanted hair, plucking the hair at the follical level. Unlike tweezing, where single hairs are pulled out one at a time, threading can remove short lines of hair.
Advantages cited for eyebrow threading, as opposed to eyebrow waxing, are that it provides more precise control in shaping eyebrows and is more gentle on the skin. It can be painful as several hairs are removed at once: however this can be minimized if it is done professionally.
There are a few different techniques for threading. These include the hand method, mouth method and neck.