abstract |
To provide a cosmetic having a dullness improving effect. An external preparation for skin comprising 1) triterpenic acid or a derivative thereof, and 2) a YAC compound and / or a salt thereof having the following characteristics. (1) It has (lambda) max in 405-415 nm and 660-670 nm. (2) It has a specific 1H-NMR spectrum. (3) In HPLC analysis under the following conditions, a single peak is shown around 15 minutes. (Mobile phase: 90% acetonitrile, column: ODS 4.6 × 250 mm, flow rate: 1 ml / min., Temperature: 40 ° C., detection: ultraviolet part 210 nm) (4) Chemical composition formula is C 34 H 40 O 9 Mass spectrum: 593 (M + H) The triterpenic acid is preferably selected from ursolic acid, oleanolic acid, asiatic acid and betulinic acid. [Selection] Figure 1 |