Comments to OEHHA: Prioritization of Chemicals (Titanium Dioxide Nanoparticles) Share page: These comments address titanium dioxide nanoparticles, which serve an important function in numerous consumer products, including sunscreens. Download Document Issues: OTC Medicines Sunscreen Other Issues Proposition 65 Titanium Dioxide Related Posts Effectiveness of Phenylephrine as an Oral Decongestant Letter Comments on the Background Document on Propylparaben and Butylparaben in Skin-Applied Leave-On Products Jan 16, 2025 Comments Comments Regarding Enhancing Coverage of Preventative Services Under the Affordable Care Act Dec 26, 2024