Which method is NOT commonly used for removing facial hair?

The method that is not commonly used for removing facial hair is pilling. Pilling typically refers to the formation of small balls of fibers on fabric as a result of wear and friction, rather than a technique for hair removal.

In contrast, threading, waxing, and electrolysis are all well-established methods for facial hair removal. Threading involves using a twisted thread to trap and remove hair, making it ideal for shaping eyebrows and removing fine hair. Waxing uses a sticky substance applied to the skin, which, when removed, takes the hair out from the root, suitable for larger areas of the face. Electrolysis is a more permanent method that uses an electrical current to destroy hair follicles.

Understanding these methods highlights both their common applications in beauty practices as well as the inapplicability of pilling in the context of facial hair removal.