What types of substances are on the Proposition 65 list?

What types of substances are on the Proposition 65 list?

The list contains a wide range of naturally occurring substances and synthetic chemicals that are known to the State of California to cause cancer or birth defects or other reproductive harm. This list includes naturally occurring substances in addition to synthetically produced substances or byproducts.


Many of the substances on the list are naturally occurring in the environment, as they have been for millennia. As per the Proposition 65 guidelines, any substances that are naturally occurring and or are below the “Safe Harbor” levels, do not require warning or reporting. Natural products that may contain these substances include, but may not be limited to, herbs, vitamins, plant derived minerals, organic plant and or animal derivatives. However, the exact levels of these naturally occurring substances vary, as well, it is prohibitively difficult to prove their origin as natural, therefore, we included these warnings to comply with California Law.