The present invention has objects to provide a functional powdery product prepared by allowing carriers to support one or more members selected from vitamin glycosides, and to provide external dermatological agents having satisfactory usability, which contain the above functional powdery products and effectively exert the functions of vitamins. These objects are solved by providing a functional powdery product prepared by allowing carriers such as saccharides to support one or more members selected from vitamin glycosides, and by providing external dermatological agents incorporated with the functional powdery products.