Fumed silica is finely split amorphous silicon dioxide particles created at high temperatures in an oxygen-hydrogen flame. Its light-diffusing characteristics make it popular in cosmetics. It's utilized in items like toothpaste as a mild abrasive. Filler in silicone elastomers and viscosity correction in paints, coatings, printing inks, adhesives, and unsaturated polyester resins are some of the other applications.