Transparent TiO2 paste is widely used in the production of dye-sensitized solar cells (DSSCs) due to its excellent light-scattering properties and high surface area, which enhance the efficiency of light absorption and electron generation. It is also employed in the fabrication of perovskite solar cells, where it acts as an electron transport layer, improving charge separation and overall device performance. In the field of photocatalysis, the paste is applied to create thin films on various substrates, enabling the degradation of organic pollutants and air purification under UV light. Additionally, it is utilized in the development of self-cleaning coatings for glass and other surfaces, leveraging its photocatalytic activity to break down dirt and organic matter. The paste is also integrated into cosmetic formulations, particularly in sunscreens, where it provides UV protection while maintaining transparency on the skin. In the realm of sensors, it is used to create sensitive layers for gas and humidity detection, benefiting from its high surface reactivity. Furthermore, transparent TiO2 paste finds applications in anti-reflective coatings for optical devices, enhancing light transmission and reducing glare.