| abstract |
Disclosed is a hair revitalizing tonic compositionncontaining a dimethylpropanediol derivative ofnthe formula:n nwherein R 1 and R 2 are each independently a C 1-30 hydrocarbonngroup which may be substituted, or a five- ornsix-membered heterocyclic group which contains 1 to 4nheteroatoms selected from oxygen, sulfur and nitrogennatoms and which may be substituted, R 3 is hydrogen atom,nan alkyl group which may be substituted, an acyl group,nan alkoxycarbonyl group, a phenoxycarbonyl group, or ancarbamoyl group which may be substituted, and a and bnare each 0 or 1, as well as a method for effecting hairngrowth promotion, hair growth stimulation, or hair lossnprevention in mammals by using such a hair revitalizingntonic composition. Also disclosed is the use of ancompound of formula (I) in the preparation of a hairnrevitalizing tonic composition. Thus, this inventionncan provide an excellent means of hair revitalization ornhair loss prevention in mammals. |