Hair Mist vs. Perfume: Is There Really a Difference.

Has anyone ever used a hair mist as their regular perfume and just gone with it? I've always wondered what the real difference is between hair mist and perfume. I understand that one is made for your hair and the other is made for your body, which makes sense, but I've never fully understood why your hair needs to be scented in the first place. I can see the appeal after leaving the salon with a fresh hairstyle and wanting that clean, refreshed feeling to last a little longer. But do people actually buy hair mist regularly, and if so, what do you like about it?

Have you ever used hair mist as a body spray?