1. Cosmetic use of an effective amount of at least one ingredient containing chicoric acid and / or its derivatives as an active agent for the preparation of an oral biologically active food supplement (BAA) for the prevention and / or treatment of skin pigmentation disorders and / or skin imperfections. 2. The use according to claim 1, characterized in that the skin disorders are disorders observed with melasma (melanosis), freckles, vitiligo, piebaldism, phenylketonuria and the like, and / or age spots. 3. The use of claim 1 for improving skin tone and / or complexion. 4. The use of claim 1, wherein the dietary supplement also improves skin hydration. The use according to claim 1, where the dietary supplement to food also enhances the protective function of the skin. The use according to claim 1, wherein the ingredient containing chicory acid is a natural edible product, such as lettuce, chicory, dandelion, grapes, squeezed grapes or combinations thereof, or extracts thereof. The use according to claim 6, wherein the extract is obtained from a plant material — chicory by solvent extraction, in particular by extraction with water or by extraction with an alcohol / water mixture, for example, by extraction with an ethanol / water mixture. The use according to claim 1, where the dietary supplement contains chicory or its extract in an amount of from about 0.1 g / l to 10 g / l, preferably from 0.5 g / l to 3 g / l. The use according to claim 1, where the dietary supplement contains chicory or its extract in a daily dose from 0.01 g to 100 g, preferably from 0.25 g to 10 g. The use according to claim 1, wherein the dietary supplement further comprises at least one type of food grade microorganism, in particular probiotics in a non-viable, viable or semi-active�1. Косметическое применение эффективного количества по меньшей мере одного ингредиента, содержащего цикориевую кислоту и/или ее производные, в качестве активного агента для приготовления пероральной биологически