By Logan Mahan There’s a good chance that you’re not wearing SPF as often as you should. We know, it’s greasy, you’re lazy and it’s not even summertime yet! Well, we hate to break it to you (again) but you should be wearing SPF every single day (yes, even on overcast days and when you plan to stay indoors, according to the experts.) It’s a critical component in protecting you against harmful, cancer-causing UV rays, and on top of melanoma, sun damage can cause premature aging, fine lines and skin tone discoloration, aka sunspots. And the best course of action would be to apply sunscreen along …