Someone whose hair is the only most 'attractive' part of her/his overall body, people love hairdependent-people because of their 'hairstyle', not because of their 'body' or 'face'.. Their body/face is usually ugly as fuck.
e.g Sarah Jessica Parker, George Clooney, Niall Horan, Harry Styles, 99% of the female-models.
Jennifer: god, niall horan is so sexy
Kate: he's hair-dependent. only his hair is sexy, his face looks like a baked waffle wtf