Whether you're used to a more maintained brow look or are in need of some extra in the arch department, eyebrow threading is an excellent, natural option for hair removal. With its origins in Asia centuries ago, eyebrow threading is a simple process that is often considered to be one of the most painless (and least invasive) options for shaping brows. But if you've ever seen it in action and have wondered how a single piece of thread (held in the practitioner's mouth) can transform arches in mere minutes, allow us to explain. Threading isn't just for brow shaping, either. While the act does indeed remove unwanted brow hairs.