Experiments with the brain cells of rats show that contact with an ingredient found in shampoos, hand lotions and paint causes neurons to die.The chemical, methylisothiazolinone (MIT), belongs to a class of compounds called biocides. These are used in the manufacture of many common household products and industrial water cooling systems to prevent bacteria from developing.According to the National Institutes of Health, brands containing MIT include the shampoos Head and Shoulders, Suave, and Clairol, as well as Pantene hair conditioner and Revlon hair color.
