cosmetic or dermatological medium containing a combination of at least one of (a) and at least one of the agents listed under (b):(a) extract of quassia amara.(b) saturated or unsaturated, linear (c9 to c18) - dicarboxylic, especially 8 hexadecen - 1.16 - dicarboxylic and / or 7 - tetradecen - 1, 14 - dicarboxylic and / or 9 - octadecen 1,18 - dicarboxylic and / or 6 - dodecen - 1.12 - dicarboxylic and / or 5 decen - 1.10 - dicarboxylic and / or decandis u00e4ur e (sebacic) and / or nonandis u00e4ure (azelaic acid), especially preferably 8 hexadecen - 116 - dicarboxylic.suitable for cosmetic and topical dermatological hautaufhellung or to prevent the hautbr u00e4unung, in particular by uv radiation induced hautbr u00e4unung, and lightening of age spots or freckles.
