Ultra-processing markers
Titanium dioxide (E171)
Definition
What it is
Titanium dioxide (E171): white colorant once widely used in candy, sauces, and supplements. Banned as a food additive in the EU since August 2022 following an EFSA safety assessment concluding it can no longer be considered safe due to genotoxicity concerns.
On the label
Label names covered by this flag
- titanium dioxide
- e171
- ci 77891
Regulation
Regulatory status
- European Union Banned (2022)
Explainer
In plain language
Titanium dioxide is a bright white mineral-based pigment used to make foods look whiter or more opaque. It carries no flavor and no nutritional value; its only job is color and appearance. On labels it may appear as E171 or the color index name CI 77891, and it is also widely used outside food in paints, sunscreens, and cosmetics.
Assessment
Why it is flagged
In 2021 the European Food Safety Authority concluded that titanium dioxide could no longer be considered safe as a food additive, mainly because it could not rule out genotoxicity, the potential to damage DNA, and because absorption of very small nanoparticles could not be excluded. On that basis the EU banned it as a food additive, with the rule taking effect in 2022. Regulators elsewhere reached different conclusions: the FDA continues to permit it in food within limits, and agencies such as Health Canada and FSANZ have reviewed the evidence without imposing the same ban. This is a genuine split between major regulators, and the underlying evidence on real-world dietary exposure remains contested. Clear Label flags it because of the EFSA finding and the international disagreement, so the divide is visible rather than hidden.
In the aisle
Where it commonly shows up
- Candy and chewing gum with white coatings
- White frosting and cake decorations
- Powdered doughnuts and pastries
- Coffee creamers and some sauces
- White or coated supplements and tablets
- Marshmallows and white-shelled sweets
Practical
Reading the label
On US labels it usually appears as titanium dioxide, sometimes noted as a color added. In other regions it can appear as E171 or CI 77891. Because it is used for whiteness, it hides in pale coatings, icings, and coated candies rather than only in obviously white foods.
Alternatives
If you want to avoid it
Some people choose candies and sweets that skip added whiteners, or products reformulated for the EU market that use alternatives like calcium carbonate or rice starch for opacity. Comparing a US and EU version of the same brand can reveal whether it was needed at all.
FAQ
Common questions
Is titanium dioxide banned in the US?
No. The FDA continues to permit titanium dioxide as a food color additive within regulatory limits. The EU banned it as a food additive effective 2022 after EFSA's 2021 assessment.
Why did the EU and FDA reach different conclusions?
EFSA said it could not rule out genotoxicity or fully assess nanoparticle absorption, so it judged the additive no longer safe. The FDA and some other agencies weighed the same body of evidence differently and left it authorized, which is why availability varies by country.
Is the food additive the same as titanium dioxide in sunscreen?
It is the same base compound, but food-grade and cosmetic or sunscreen grades are regulated separately and used differently. The EFSA assessment that led to the EU food ban was specifically about eating it, not applying it to skin.
Citations
Sources
Citation
Primary reference
About this page: the definition, label names, severity, and regulatory chips come from the clearlabel ingredient taxonomy, the same data the scanner uses to score products. Research summaries describe associations reported in published studies, not diagnoses; individual responses vary. Scan any product with clearlabel to see which of its ingredients carry flags.