Silica What Is SIlica for Bone Health? Silicon dioxide, most often referred to as silica, is a combination of silicon and oxygen and is concentrated in tissues such as our arteries, tendons, ligaments, connective tissue, collagen, skin, nails, hair, and teeth. While silica has long been known for its impressive skin health, it is also an essential nutrient for strong bones and teeth. https://www.nationalnutrition.ca/bone-health/silica.html #Silica