二氧化鈦
Mascara is composed of a base mixture of pigments, waxes, and oils with varying supporting components. Mascara pigments most commonly include iron oxides and titanium dioxide which provide mascara with its desired color. Titanium dioxide (TiO2) accounts for over 65% of inorganic pigments sales volume. TiO2 gives the pigment a white color while different iron oxides provide a variety of colors such as red, yellow, brown, and black. The particle size of opaque pigments ranges from 0.2-0.3 µm.