Threading uses twisted cotton thread to yank hair out in rows, like a tiny game of jump rope for your follicles. It’s super precise, which is why it’s amazing for eyebrows and upper lips. You can find a pro at a salon for around $10, and it’s almost painless (mostly because you’re too distracted chatting with the technician).
The downside is that you need someone else to do it, unless you’re a contortionist. But the results are sharp, clean, and last about two weeks.