Looking for "natural" anti-chlorine shampoo - Aubreys?

As the subject says, I am looking to find a natural anti-chlorine shampoo. Has anyone found one that they like? One I found via search is called Aubrey Organics Swimmer's Normalizing Shampoo, but I haven't tried it yet, so I welcome feedback on it and other similar products. And yes, I know that natural is one of those wiggly words than anyone can just slap on a label, and that some think it's just BS (and often it is). However, I have some medical reasons to try to eliminate endocrine disrupters from my life as much as possible, and propyl paraben, a common ingredient in many shampoos, is supposed to be one (according to, e.g., the European Commission on Endocrine Disruption).
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