Silica Shells are hollow ellipsoids of highly porous silica. These Silica Microspheres have a very high absorption capacity, up to 5 times their own weight. To prevent absorption of formula ingredients by Silica Shells, they can be preloaded with a volatile liquid. When applied onto the skin, this volatile material will evaporate, leaving Silica Shells empty and available to absorb sebum.

二氧化硅壳体是高度多孔二氧化硅的中空椭圆体。这些二氧化硅微球具有非常高的吸收能力，高达其自身重量的5倍。为了防止二氧化硅壳吸收配方成分，可以预先加入挥发性液体。当施用于皮肤上时，这种挥发性物质会蒸发，使二氧化硅壳体变空并可用于吸收皮脂。