While it may be tempting to put on a hat when it’s colder outside, doing so can actually be detrimental to your locks. The roughness of materials like wool and then your hair also rubbing against your sweaters, blazers, and coats, these things could “rub the dryness” right on out of your hair’s ends should you put a hat on top of long hair or a blowout. One way to protect your ends from drying out is to seal them with sealing oil or styling wax.