Patent Number: 6,255,313

Title: Sustained release hair growth composition

Abstract: A sustained hair growth preparation comprising minoxidil and dipropylene glycol makes it possible to retain the absorbed minoxidil in the dermis and to increase the concentration of the minoxidil around the hair bulbs which are the hair growing sites, thereby making it possible to give a sufficient hair growth effect.

Inventors: Suzuki; Kenichi (Tokyo, JP), Imamura; Kouji (Tokyo, JP), Morioka; Susumu (Tokyo, JP), Tanaka; Shigeo (Tokyo, JP)

Assignee: Taisho Pharmaceutical Co., Ltd.

International Classification: A61K 8/30 (20060101); A61K 8/49 (20060101); A61Q 7/00 (20060101); A61K 031/505 (); A61K 031/045 ()

Expiration Date: 07/03/2018