Introduction

The Office of Environmental Health Hazard Assessment (OEHHA), which is the agency tasked with implementing Proposition 65, has listed one very specific form of titanium dioxide on Proposition 65's list of chemicals. Only airborne and unbound particles of respirable size titanium dioxide (Listed Titanium Dioxide) is on Proposition 65's list. OEHHA listed that specific form of titanium dioxide as cancer-causing in humans, thus mandating a cancer warning on products containing it.