What's the best, cheapest all natural shampoo? If castile soap, please explain your experience.?

I have always used babymild castile (Dr. Bronner's) on my kids from head to toe b/c they have such sensitive skin to products, but I can say that the castile soap doesnt leave the hair feeling silky, you would most definately need a conditioner. I purchased earth science all natural condioner from drugstore.com and added my own essential oils to it (its fragrance free), and it worked great.

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