What a 1/5 rating means
On the comedogenic scale, a 1 sits at the safe end of the scale — clogging is unlikely for most people. That places Titanium Dioxide in the range most people, including many with acne-prone skin, tolerate well.
One thing the number cannot tell you is concentration. Ingredients are listed in descending order, so Titanium Dioxide near the end of a label is present in tiny amounts and matters far less than the same ingredient near the top.
About Titanium Dioxide
It is a mineral-based ingredient, common in pigments and sun protection. A mineral sunscreen and white pigment generally regarded as low-risk (around 1) and non-comedogenic.
On a label it can read as Titanium Dioxide, Ci 77891 — worth knowing when you scan an ingredient deck.
Titanium Dioxide in makeup and skincare
It is central to mineral makeup, pressed powders, and mineral sunscreens. Its irritancy is rated separately at 0/5, which is low.
Titanium Dioxide comedogenic FAQ
Is Titanium Dioxide comedogenic?
Not usually. Titanium Dioxide is rated 1/5, which is low risk on the 0–5 comedogenic scale, so it is unlikely to clog pores for most people, including many with acne-prone skin.
What is the comedogenic rating of Titanium Dioxide?
Titanium Dioxide has a comedogenic rating of 1/5 (low risk). Of the 190 ingredients in our dataset with a published rating, 132 rate higher than Titanium Dioxide, 28 rate lower, and 29 others share its 1/5. Among the 7 rated minerals, 1 rates higher and 2 lower. The figure is drawn from 1 cited source, listed on this page.
Is Titanium Dioxide pore-clogging?
It is unlikely to be. At 1/5, Titanium Dioxide sits in the range generally treated as non-comedogenic. Concentration still matters: an ingredient near the top of a label makes up far more of the product than one near the end. Comedogenic ratings come mostly from rabbit-ear assays and small human patch tests of the pure ingredient at high concentration, so they are a screening guide, not a prediction for your skin or a medical claim.