Eyebrow threading is a practice of shaping the eyebrows. Eyebrow threading is a preferred hair removal technique for a number of reasons. Unlike tweezing or plucking, eyebrow threading removes one clean line of hair all at once, making it much quicker and easier to shape the brows. It is important to find an aesthetician who is experienced at eyebrow threading. Inexperience can result in uneven brows, hair breakage, ingrown hairs, or unnecessary pain.