Threading is another ancient method of hair removal that originated in the Middle East. This method of hair removal involves cotton thread being twisted and rolled across the skin to entangle and pluck out unwanted hair. This method is also great for those with sensitive skin, since it only pulls the hair and does not irritate the skin. It is quicker than tweezing and very precise, so it is great for shaping eyebrows. Many shopping malls have kiosks where you can have your eyebrows threaded at a reasonable cost. It is important to note that some therapists who thread place one end of the cotton thread in their mouths. Although that area of the thread does not directly touch the skin, it can be unsanitary since cotton is absorbent and can wick the saliva down the thread toward your skin. Threading can be done just as easily and effectively without the therapist placing the thread in her mouth.