Styrene is recognized as a known animal carcinogen and found «reasonably anticipated to be a human carcinogen» by the National Toxicology Program and «probably carcinogenic to humans» by the International Agency for Research on Cancer; it is also listed
as a carcinogen under California's Proposition 65 in 2016.
Not exact matches
According to California's regulations
under the Safe Drinking Water and Toxic Enforcement Act of 1986 (commonly referred to
as «Prop 65», which is significantly stricter than the FDA on many levels), there is a «Safe Harbor» list of two classes of chemicals: those that cause reproductive toxicity and those that are considered
carcinogens.
The problem with that is that caramel coloring has come
under fire recently
as a potential
carcinogen, which is especially concerning in a product that is indicated for use multiple times a day.