Process for the concentration of the spilanthol contained in a composition, comprising: a. a first step of mixing a composition comprising spilanthol with a solvent that is inert to acids, selected from an ether selected from diethyl ether, diisopropyl ether, methyl tert-butyl ether, tetrahydrofuran, methyl tetrahydrofuran, dioxane, dimethoxyethane, anisole, crown ethers or also polyethylene glycol, a hydrocarbon selected from the linear or branched, substituted or unsubstituted alkanes, comprising between 5 and 8 carbon atoms or the cycloalkanes and substituted or unsubstituted aromatic compounds comprising between 5 and 8 carbon atoms, or a ketone selected from acetone, methyl ethyl ketone, methyl isobutyl ketone, pinacolone, diethyl ketone, diisopropyl ketone, or also 2,4 dimethyl-3-pentanone, in order to obtain an anhydrous solution comprising spilanthol; b. a second step of forming an oily product comprising an addition derivative of spilanthol by mixing the anhydrous solution obtained in the first step with a strong acid selected from hydrochloric acid, concentrated sulphuric acid, phosphoric acids, oxalic acid, nitric acid, hydriodic acid, hydrobromic acid, perchloric acid, chloric acid, permanganic acid, manganic acid, fluoroantimonic acid, magic acid, methanesulphonic acid, trifluoromethanesulphonic acid or triflic acid, fluorosulphuric acid or fluorosulphonic acid, naphthalene-1-sulphonic acid, naphthalene-1,5-disulphonic acid, disulphuric acid or oleum, or also paratoluenesulphonic acid; c. a third step of hydrolysis of said addition compound comprised in the oily product obtained in the second step, by bringing it into the presence of a base selected from sodium carbonate, sodium bicarbonate, lime, ammonium hydroxide, soda, lithium hydroxide, potash, or also barium sulphate, in order to obtain a spilanthol solution. a. a first step of mixing a composition comprising spilanthol with a solvent that is inert to acids, selected from an ether selected from diethyl ether, diisopropyl ether, methyl tert-butyl ether, tetrahydrofuran, methyl tetrahydrofuran, dioxane, dimethoxyethane, anisole, crown ethers or also polyethylene glycol, a hydrocarbon selected from the linear or branched, substituted or unsubstituted alkanes, comprising between 5 and 8 carbon atoms or the cycloalkanes and substituted or unsubstituted aromatic compounds comprising between 5 and 8 carbon atoms, or a ketone selected from acetone, methyl ethyl ketone, methyl isobutyl ketone, pinacolone, diethyl ketone, diisopropyl ketone, or also 2,4 dimethyl-3-pentanone, in order to obtain an anhydrous solution comprising spilanthol; b. a second step of forming an oily product comprising an addition derivative of spilanthol by mixing the anhydrous solution obtained in the first step with a strong acid selected from hydrochloric acid, concentrated sulphuric acid, phosphoric acids, oxalic acid, nitric acid, hydriodic acid, hydrobromic acid, perchloric acid, chloric acid, permanganic acid, manganic acid, fluoroantimonic acid, magic acid, methanesulphonic acid, trifluoromethanesulphonic acid or triflic acid, fluorosulphuric acid or fluorosulphonic acid, naphthalene-1-sulphonic acid, naphthalene-1,5-disulphonic acid, disulphuric acid or oleum, or also paratoluenesulphonic acid; c. a third step of hydrolysis of said addition compound comprised in the oily product obtained in the second step, by bringing it into the presence of a base selected from sodium carbonate, sodium bicarbonate, lime, ammonium hydroxide, soda, lithium hydroxide, potash, or also barium sulphate, in order to obtain a spilanthol solution.