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It’s true that titanium dioxide does not rank as high for UVA protection as zinc oxide, it ends up being a small difference (think about it like being 10 years old versus 10 years and 3 months old). This is not easily understood in terms of other factors affecting how sunscreen actives perform (such as the base formula), so many, including some dermatologists, assume that zinc oxide is superior to titanium dioxide for UVA protection. When carefully formulated, titanium dioxide provides excellent UVA protection. Its UVA protection peak is lower than that of zinc oxide, but both continue to provide protection throughout the UVA range for the same amount of time.

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Rutile titanium dioxide, the most common form of TiO2, possesses a tetragonal crystal structure and exhibits unique physical and chemical properties that make it suitable for a wide range of applications. One of the key advantages of rutile TiO2 is its high refractive index, which ranges from 2.4 to 2.7. This high refractive index enables rutile TiO2 to provide excellent hiding power and whiteness in coatings, plastics, and other materials.

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