I use 70 spf sun screen on my body if I'm going to be outside more than an hour or so.
I use sun screen on my face daily, inside or out. It's in my daily moisturizer, in my mineral make up, in my BB cream, in my bronzer...
My mom had a skin cancer scare a couple years back and my guy and I both ride motorcycles so we're pretty careful. Plus, sunburn hurts!