A subject of the invention is a process for concentrating the spilanthol contained in a composition, comprising the formation of an addition compound of spilanthol with a strong acid, then the hydrolysis of said addition compound.The process according to the invention makes it possible to easily obtain a composition which may comprise 100% either isolated actual spilanthol ((2E,6Z,8E)-N-(2-methyl propyl)deca-2,6,8-trienamide), or a mixture of actual spilanthol with the isomers andor homologues thereof that may accompany it.
