What do you do for high humidity on hair?

I live in the US South where the weather is Humid Subtropical. Example: It was 90 degrees today and the heat index was 102. It is just May. It is nearly always humid here in the summer. Here is the problem. I have put my hair up and put my hair up. Guess what the humidity just doesn't help. Is there something that can be done at all about humidity on hair. I cannot do a thing to it during the summer, and really neither can anyone else. If somebody has a cure for damaged hair to humidity please let me know.

What do you do for high humidity on hair?
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