Titanium Dioxide In Skin Care-What Does Titanium Dioxide

Titanium dioxide, also known as titania, is a white, powdery mineral that is considered a basic oxide of titanium. Its chemical formula is \( TiO_2 \). It is known for its high refractive index, which makes it an excellent material for use in a variety of applications:

1. **Pigment**: It is one of the most widely used white pigments because of its brightness and opacity. It is used in products such as paints, coatings, plastics, paper, inks, foods, and cosmetics.

2. **Photocatalysis**: Titanium dioxide is used as a photocatalyst in self-cleaning products, such as tiles and glass. When exposed to sunlight or artificial light, it can break down organic material on its surface, making it useful for air purification and water treatment.

3. **Sunscreen**: In sunscreen products, it acts as a UV filter, protecting the skin from ultraviolet rays by reflecting them away from the skin.

4. **Food Additive**: As E171, it is used as a colorant in foods and medicines to give them a white or creamy color.

5. **Electronics**: It is used in electronic applications, such as in the production of certain types of capacitors and as a component in certain types of sensors.

6. **Aerosols**: In the form of nanoparticles, it can be used in aerosol products for various applications, including sunscreen sprays and insecticides.

Titanium dioxide is generally considered safe for use in the forms and concentrations in which it is commonly found in consumer products. However, there has been some concern about the potential health effects of inhaling fine particles of titanium dioxide, especially in the form of nanoparticles, which can lead to inflammation and other health issues if inhaled in large quantities. Additionally, there is ongoing research into the environmental impact of titanium dioxide nanoparticles.