1. Anhydrous pharmaceutical composition, characterized in that it contains:! a. at least one phenolic derivative selected from hydroquinone, rucinol or lucinol, 4-hydroxyanisole, hydroquinone monoethyl ether and hydroquinone monobenzyl ether,! b. glyceryl behenate, its derivatives or mixtures thereof,! c. at least one phenolic derivative solvent selected from alcohol or glycol type solvents! however, this composition does not contain either petroleum jelly, or the polyorganosiloxane elastomer. ! 2. The composition according to claim 1, characterized in that the phenolic derivative is contained in an amount of from 0.00001 to 10 wt.% In relation to the total weight of the composition. ! 3. The composition according to claim 1, characterized in that the phenolic derivative is hydroquinone or rucinol. ! 4. The composition according to claim 1, characterized in that the glyceryl behenate is contained in an amount of from 1 to 40 wt.% In relation to the total weight of the composition. ! 5. The composition according to claim 1, characterized in that it further comprises at least one lipophilic thickener and / or at least one surfactant and / or at least one oil and / or at least one binder. ! 6. The composition according to claim 5, characterized in that the additional lipophilic thickener is selected from oleic alcohol, cetyl alcohol, cetearyl alcohol, stearyl alcohol, hydrogenated jojoba oil, hydrogenated sunflower oil, hydrogenated castor oil, hydrogenated coconut oil, lanolin , glyceryl esters of fatty acids, hydrogenated coconut hl1. Безводная фармацевтическая композиция, отличающаяся тем, что она содержит: ! а. по меньшей мере одно фенольное производное, выбираемое из гидрохинона, руцинола или люцинола, 4-гидроксианизола, простого моноэтилового эфира гидрохинона и простого монобензилового эфира гидрохинона, ! b. бегенат глицерила, его производные или их смеси, ! c. по меньшей мере один растворитель фенольного производного, выбираемый из растворителей спиртового
