HAIR CARE PRODUCTS (NON-COLORING)

While most chemicals in cosmetics present slight or zero threat, some have been associated to substantial medical issues, such as cancer, reproductive and neurological harm, and developmental delays. Cosmetic chemicals invade a person's body through the skin and inhalation, and lead to similar risks as food chemicals, per this site.

Chemicals associated with cancer can be found in water, food, and various other commonly used goods. Still, no classification of consumer goods is susceptible to less government inspection than cosmetics, including Coal Tar Shampoo. Though most of the chemicals and contaminants in cosmetics and personal care products in all likelihood pose minimal risk, subjection to a few has been associated with serious health concerns, such as cancer.