Cited skincare — peer-reviewed evidence, no upsell.
Ti

Titanium Dioxide

Titanium Dioxide · Titanium Dioxide (CI 77891) · CI 77891SPF filter

Mineral UV filter. Primarily UVB plus short UVA. Pairs with zinc oxide for full-spectrum coverage.

What it does

Titanium dioxide reflects and scatters UV radiation. It covers UVB and short UVA but leaves longer UVA gaps — modern mineral sunscreens pair it with zinc oxide for full-spectrum protection. Less of a white cast than zinc at the same concentration. Pregnancy-safe.

The evidence, graded

expert consensusSunscreen should sit as a film on top of moisturizer, not be mixed into it. Diluting sunscreen with moisturizer in your hand reduces filter concentration and the labeled SPF no longer applies.Petersen 2014 · Photodermatology, Photoimmunology & Photomedicine ↗

Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.

Also known as

TiO2, ci 77891

Pairs worth knowing

Zinc Oxide (sunscreen) · works together ↗L-Ascorbic Acid (Vitamin C) · works together ↗Vitamin E (Tocopherol) · works together ↗
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