Beauty Lies Truth

Breast Cancer Fund's Campaign for Safe Cosmetics 

+ Chemicals in Cosmetics 

The Chalkboard Mag's Natural Beauty Section

Environmental Working Group's Skin Deep Database

Follain's Restricted Substances List + Naturalchemyst Blog

Mind Body Green

No More Dirty Looks Blog + Book by Siobhan O'Connor & Alexandra Spunt

Skin Cleanse by Adina Grigore

Story of Cosmetics 

Stink Documentary

Think Dirty App 

The Representation Project's Miss Representation Documentary

US FDA'S Prohibited & Restricted Substances List (not a resource I trust to be transparent, but you can find the current - lack of - legislation here)