Effects of 70% ethanolic extract from leaves of Ginkgo biloba (GBE) on the hair regrowth in normal and high butter diet-pretreated C3H strain mice which posterior hair we shaved were investigated. GBE showed a promoting effect on the hair regrowth. GBE had the inhibitory effects on blood platelet aggregation, thrombin activity and fibrinolysis. GBE inhibited the increase of serum the triglyceride level in high cholesterol diet-treated rats. These results suggested that GBE promotes the hair regrowth and could be used as a hair tonic.