A light-colored well-ventilated full-face helmet can provide some of the same benefits previously mentioned, such as keeping dehydrating air off of your face. It will also provide shade for your noggin, and a light-colored lid will suck in a bit less light and heat than a dark one. It and a tinted windscreen will also keep bugs and UV rays off of your face. Most importantly, it will provide protection for your brain in a fall.