Check out these resources provided by the Environmental Working Group
The Environmental Working Group is a nonprofit specializing in providing useful resources to consumers while simultaneously pushing for national policy change. Their mission: to use the power of public information to protect public health and the environment.
Here are some of the resources which the EWG has made available:
Skin Deep: Cosmetic Safety Database
Shopper’s Guide to Pesticides in Produce
2011 Sunscreen Safety Guide: Best & Worst