Unless you've been living on planet Mars for the past century, you would have heard of the bob haircut... Y'know, *that* chin-length 'do that Lily Collins is best known for sporting – oh, and the one ...

The Korean two-in-one haircut involves splitting the hair into two sections and cutting the underside straight across into a bob. The top layer is left untouched, besides a subtle trim if you need it.

Trends come and go. From the mullet in the ’80s to the faux-hawk in the 2000s, most men’s haircut fads don’t age well in photos. But classic cuts endure. They look sharp in the moment and even sharper ...