Titanium Dioxide exhibits strong oxidizing photoactivity when irradiated by UV ray.

The surface of pigmental titanium dioxide used for paints and plastics is usually treated with inorganic compounds (partially with organic compound) to restrain the photoactivity. Photocatalytic titanium dioxide utilizes the photoactivity at the most. 

With the light energy, photocatalyst decomposes pollutants and malodors mainly made of organic compounds into carbon dioxide and water. By super-hydrophilicity induced by light energy, affinity to water increases and anti-fogging effect, anti-stain effect and self-cleaning effect can be imparted. In addition, this photoactive reactions can last by its regenerating property.

ISK's photocatalytic titanium dioxide ST, STS products are manufactured in ISK's original technology to further enhance photoactivity.