Also known as: TiO2, CI 77891
Titanium dioxide is a mineral UV filter that primarily protects against UVB and short-wave UVA radiation. It is photostable, non-irritating, and suitable for sensitive skin. It provides less UVA protection than zinc oxide, so formulations often combine both. Also used as an opacifier and white pigment in cosmetics. Nano-sized particles improve aesthetics but raise ongoing safety research questions.
Comedogenicity ratings are based on the rabbit ear assay model. Individual skin responses vary. See our article on comedogenicity ratings for context.
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