White mineral oil is a clear liquid carrier that can also be found in a wide variety of cosmetics, personal care and household products. A carrier does just what it sounds like - it helps carry a product to a surface by thinning or thickening the formula or simply ensuring even distribution of the other ingredients in the formula. We use white mineral oil because without a carrier, the product would not work with the same consistency across a surface. White mineral oil can also be used as a cleaning agent, or "surfactant," that removes dust, dirt and soils, or as a stabilizer that helps maintain a product formula when exposed to air, light or heat, or as a defoaming agent that helps reduce the formation of foam to avoid defects on surface coating post-use.
Polystyrene polymer is a film former that works in combination with rinsing water to keep surfaces cleaner longer. It works by first attaching to the surface, and then helping to prevent soils from attaching so that they can be washed away by water. It is especially good at helping prevent soap scum from adhering to shower and sink surfaces.