Coal Tar Dyes
Derived from petrochemicals, and may be contaminated with trace amounts of heavy metals like arsenic, cadmium and lead.
There is concern that synthetic dyes may cause cancer and that heavy metals can harm the nervous system and cause other adverse health effects. Dyes in cleaning products can be absorbed through the skin or ingested in the case of soap residue on dishes.
**They are completely unnecessary to the cleaning function of the product.**
Found in: most types of household cleaning products.