Titanium Dioxide
TiO2E171
Pigment, UV Filter, Opacifier
Titanium dioxide is a bright white mineral that makes things opaque and white, and it can also protect your skin from the sun's harmful rays. You can find it in paints, sunscreens, and even some foods to make them look whiter.
Moderate Concern
Source: EFSA assessment, IARC classification
While generally considered safe when applied to skin, there are concerns about potential health effects when very small particles are eaten or breathed in.

What Is Titanium Dioxide? - Science Through Time
Science Through Time
No result found for this ingredient.
Cytotoxic effects of glass ionomer cements modified by metallic agents: A systematic review and meta-analysis.
Danelon M, Nunes GP, Alves RO
2026
Read on PubMedLast updated: May 16, 2026