A substance called Cocamide DEA is a chemically modified form of coconut oil that is used as a thickener or foaming agent in shampoo. However, the state of California has outlawed its use, because it may be carcinogenic to humans. The CEH is suing companies producing and distributing these products, including Prell, Paul Mitchell and Colgate Palmolive shampoos. Also included are products marketed to children, and even Friday, those which falsely claims to be organic (Organic by Africa’s Best.)
I thought that the worst thing your shampoo could do to you is to sting your eyes, but it turns out that your shampoo could be deadly. The Center for Environmental Health is based in Oakland, California, performed a study on shampoos and soaps and found that 98 included a possible carcinogen known as Cocamide diethanolamine (DEA Cocamide).
And until things are resolved, it seems like getting shampoo in your eyes may have become the least of your concerns. You can find a full list of all 98 suspect shampoos here.
Source: inhabitat.com healthyfoodhouse.com