Silica, a compound comprising silicon and oxygen, is widely used in cosmetics and personal care items. In its amorphous form, silica is a hard, inert, and colourless substance found naturally as quartz and in various rocks like sandstone. In the realm of cosmetics, quartz is finely ground into a powder and serves multiple functions. It’s adept at absorbing sweat and sebum, imparting a lightweight, barely-there sensation when incorporated into specific sunscreen formulations. Furthermore, it’s a common alternative to plastic micro-beads for gentle exfoliation purposes.