Titanium Dioxide
二氧化钛
Also known as: TiO2, CI 77891
What it does
- Physical UV filter
- Mainly UVB protection
- Colorant
Evidence
Strong evidenceFDA Category I sunscreen agent. Best for UVB; combine with ZnO for broad spectrum.
Skin types
Well suited for: All Sensitive
Very gentle mineral filter. May leave white cast on darker skin.
Helps with
Sun Protection
Irritation potential
Very Low
Comedogenic rating
0 / 5
Pregnancy
Generally considered safe during pregnancy
Safe. Preferred during pregnancy as a physical filter.
Good to know
Often used with zinc oxide for full spectrum coverage. Nano forms reduce white cast.
References
Compound data from PubChem (U.S. National Library of Medicine).
Further reading
- A work group report on ultrafine particles (American Academy of Allergy, Asthma & Immunology): Why ambient ultrafine and engineered nanoparticles should receive special attention for possible adverse health outcomes in human subjects — J Allergy Clin Immunol (2016)
- A Zebrafish Embryo as an Animal Model for the Treatment of Hyperpigmentation in Cosmetic Dermatology Medicine — Medicina (Kaunas) (2018)
Selected peer-reviewed reviews on this ingredient, indexed by Europe PMC. Provided as background, not proof of any specific claim.
Related ingredients
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Analyze a productEducational information only — not medical advice. Always patch test and consult a dermatologist for skin concerns.