In the food industry, fumed silica is used as anti-caking and anti-clumping agent. It is added to powdered dry foods such as whey powder, vegetable powder, fruit powder, egg powder, instant coffee and cream, sugar, flour, salt, spices, etc.). Fumed silica is also used as effective bleach for nutritional beverages (wine, juices and beer).

As an additive in foodstuffs hydrophilic silica of grades FUMISIL200, FUMISIL300, and FUMISIL380 is typically used in concentrations from 0.1% to 30%.