Titanium dioxide is a white pigment used in small amounts in some period products, typically in the tampon string, generally below 0.1%. Widely shared claims that it causes cancer in tampons have been checked and rejected by fact-checkers and cancer researchers — the cancer research concerns inhalation of the powder in industrial settings, not the trace amounts in a tampon string. Tampon Tribe products are made without titanium dioxide, which is a formulation choice rather than a safety warning.
What is titanium dioxide?
Titanium dioxide is a naturally occurring mineral oxide, refined into a fine white powder. It is one of the most widely used pigments in the world because it is exceptionally good at scattering light, which makes things look bright white and opaque.
You will find it in paint, paper, plastics, sunscreen, toothpaste and some food products. In period care it appears occasionally as a whitening agent, most often in the string of a tampon rather than in the absorbent core, and typically at very low concentrations.
Where did the cancer claim come from?
It comes from a real piece of science that has been detached from its context.
The International Agency for Research on Cancer classified titanium dioxide as possibly carcinogenic to humans, Group 2B, in 2006. That classification is based on studies of inhaled titanium dioxide dust — rats exposed to high concentrations of airborne powder, and workers in industrial settings where the powder is manufactured or handled in bulk. The concern is respiratory exposure to fine particles.
That is a meaningful occupational health finding. It is not a finding about a trace amount bound into a tampon string, which is not inhaled and is not in powder form.
The claim in its viral form — that tampons contain a cancer-causing chemical — has been examined and rejected. PolitiFact rated the claim false in 2022. Harvard's Cancer FactFinder, which exists specifically to assess this kind of claim, reached the same conclusion about titanium dioxide causing cancer through everyday consumer exposure.
Is it in your tampons?
That depends on the brand, and most will not tell you, because they do not have to. In the United States the FDA regulates tampons as medical devices rather than cosmetics, and medical devices are not subject to the ingredient-labelling rules that apply to personal care products. Only New York and California require disclosure, and California's law includes a trade-secret exemption.
Where it is present, it is usually in the string, usually as a whitener, and usually well below 0.1%.
Why does Tampon Tribe leave it out?
Not because we think it is dangerous. We have just told you the opposite.
We leave it out because our formulation principle is a short list. Tampon Tribe tampons contain one material: certified organic cotton in the core, the safety veil and the string. Adding a pigment to make the string whiter would mean adding a second material for cosmetic reasons, which is the kind of trade we do not make.
"No titanium dioxide" belongs on our material list the same way "no dyes" does — as a description of what is not in the product, not as a warning about what is in someone else's.
Why we are telling you this rather than selling it
The scary version of this article would perform better. It would also be untrue, and we would rather you could trust the things we tell you that are true.
There are real, verifiable differences between period products — what the absorbent core is made of, whether the back sheet is plastic, whether anything composts, whether a brand publishes its materials at all. Those differences are worth your attention. A debunked claim about a pigment in a tampon string is not, and repeating it would make the genuine points harder to hear.
If you want a rule of thumb: be more suspicious of a brand whose case rests on a single scary ingredient than of the ingredient.
Where Tampon Tribe stands
Tampon Tribe tampons, pads and pantyliners are made without titanium dioxide, chlorine bleach, dyes and added fragrance. The complete material list for every product, along with published third-party test results, is on What's Actually In It. More on the tampons is on the organic cotton tampons page, and you can shop them here.
Frequently asked questions
Does titanium dioxide in tampons cause cancer?
No. The cancer research concerns inhalation of titanium dioxide powder in industrial settings, not trace amounts bound into a tampon string. PolitiFact rated the viral claim false in 2022, and Harvard's Cancer FactFinder reached the same conclusion about everyday consumer exposure.
Why is titanium dioxide in period products at all?
As a white pigment. It scatters light extremely well, so it is used to make things look bright white — in period care, most often in the tampon string, typically below 0.1%.
How do I know if my tampons contain titanium dioxide?
Usually you cannot tell from the box. Period products are regulated as medical devices in the US, so ingredient disclosure is not federally required. Check whether the brand publishes a full material list.
Do Tampon Tribe tampons contain titanium dioxide?
No. Tampon Tribe tampons are made without titanium dioxide, chlorine bleach and dyes. They contain one material: certified organic cotton.