I am not convinced that frequent washing is that big a problem for most people. I cleanse with conditioner only every other day, and during the worst of the summer do wash every day, and my hair is fine. I would be more concerned with taking care of your scalp, TBH. You don't mention how you are washing, but I assume you are using an SLS shampoo. Perhaps you can coat your hair from the ears down in conditioner and then wash your scalp the way you need to.
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