Oh no, I had the SAME thing a few weeks ago! I spent too long in the sun and not only did my hair color fade to a hideous orange washed out color but my scalp was red and flaking! I washed my hair with a gentle shampoo with some mint in it to help cool and soothe my scalp, but also applied a sun protecting shield and aloe spray to it. I think you may be able to find some basic ones in your local drug type store,
Try a soothing UV protecting mist or mask as well which can help to hydrate the hair but also to soothe the scalp a bit. There isn't TOO much you can do but try to keep your head feeling comfortable with an updo, don't brush your hair too hard, and keep the hair hydrated with a hair repair serum. Andre Walker, Alterna and Josie Maran have some amazing sprays and serums to try!