Goatees grow on them

CHINS

Think of the part of the face that’s often shaved smooth except when styling facial hair like a soul patch or Van Dyke.

A goatee is a small beard that grows specifically on the chin, so the clue is pointing directly to the body part where goatees appear. The word "them" hints at the plural form, making "chins" the straightforward answer. There’s no hidden wordplay—just a simple definition linking facial hair to its location.