My comment covers two areas of riding in the heat in the southwest.
I'm a former 29 year Las Vegas, NV resident & now a Tucson, AZ resident so you can safely assume I'm familiar with riding in the heat. I have a two-fold response to your comment.
(1) Hydration - Carry enough liquid to stay hydrated. Not staying hydrated is a major consideration when riding in 100+ temps. So drink liquids more than you really think you to while riding.
(2) Sun Screen - DO apply sunscreen before & during your rides. The sun will give you sunburn without it so play it safe and apply sunscreen ever few hours.
I also apply moisturizing body lotion to my exposed skin when I arrive home after a ride. When the temps are 100+ and you've been riding in the sunlight your skin will thank you.
Again, my two major items are hydration & sunscreen!
Last edited by RoadRider4321; 05-07-17 at 01:12 AM.