What is the main role of titanium dioxide in cosmetic formulations?

Titanium dioxide primarily functions as a pigment in cosmetic formulations, contributing to product opacity and providing coverage on the skin. Its ability to scatter light makes it effective at creating an opaque layer that conceals imperfections while also offering a brightening effect. This property is particularly valuable in foundations, concealers, and sunscreens, where a smooth and even application is desired.

While fragrance, moisture retention, and transparency are important aspects of cosmetic formulations, they are not the primary functions of titanium dioxide. Fragrance involves aromatic compounds, moisture retention would typically be attributed to humectants or emollients, and transparency relates more to the use of different ingredients to achieve a sheer finish. Thus, the key role of titanium dioxide in providing coverage distinguishes it as a vital ingredient in various cosmetic products.