Need product rec for humidity and heat protection

I live in Florida where it is a thousand degrees and a thousand percent humidity every day. On top of that I work outside at a theme park. I love my job but I feel so self conscious sometimes about how I look while doing it. I wash my hair every day (that I work at least) because it gets soaked in sweat and I usually blow it dry to help smooth it out. Still by the end of a work day it is a mess of tangles and flyaways and fluff. I’m trying to find something that will keep it presentable without weighing it down. All recommendations welcome, I will order online if it is something I cannot get locally but I do have a Sephora, Ulta and Target within driving distance.