Unsaponifiables are fatty substance components (oil, fat, wax) that do not produce soap when exposed to alkali and remain insoluble in water but soluble in organic solvents. Nonvolatile components such as alkanes, sterols, triterpenes, fatty alcohols, tocopherols, and carotenoids, as well as those that primarily emerge from the saponification of fatty esters, are classified as unsaponifiables (sterols esters, wax esters, etc.).