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 Zinc Oxide 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 Zinc Oxide near the end of a label is present in tiny amounts and matters far less than the same ingredient near the top.
About Zinc Oxide
It is a mineral-based ingredient, common in pigments and sun protection. A mineral sunscreen and soothing agent rated 1/5, generally friendly to acne-prone skin.
Zinc Oxide 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.
Zinc Oxide comedogenic FAQ
Is Zinc Oxide comedogenic?
Not usually. Zinc Oxide 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 Zinc Oxide?
Zinc Oxide has a comedogenic rating of 1/5 (low risk). Of the 190 ingredients in our dataset with a published rating, 132 rate higher than Zinc Oxide, 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 Zinc Oxide pore-clogging?
It is unlikely to be. At 1/5, Zinc Oxide 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.