Dont take my word for it see some facts for yourself.

All the science just a click away. One question you may have is Does EWG ( environmental working group ) endorse products or brands?
No. Skin Deep was designed for educational purposes only. EWG does not sell or endorse any brands or products. Product ratings are brand-blind, based on a hazard classification scoring system that applies product by product, and are subject to change as scientific data develops and becomes public.
http://www.cosmeticsdatabase.com/browse.php?maincat=hair+care

Looking for tools for a healthy lifestyle? Check out EWG’s exclusive. Skin Deep rated over 60,000 products last year and your support today will ensure EWG can keep expanding and updating this important tool to protecting you and your families from chemicals in everyday consumer products.