Detergents contain synthetic or organic surface active agents called surfactants. which are derived from petroleum product precursors. They have the common property of lowering the surface tensions of water thus allowing dirt or grease adhered to various articles to be washed off. Linear alkyl benzene sulfonate (LAS) is a most commonly used anionic surfactant. https://www.nacrack.com/deal-alert-Dea-Eyewear-Jemma-deal-zone/