1. Vitamin E has a topical action, accelerating the hair growth of rabbits.
2. When 0.5% α-tocopherol and α-tocopheryl acetate lotions were applied, the effect was recognized in as early as 2 weeks and it became marked after 4 weeks, changing the aspect of the hair growth. Weekly hair growth reached the maximal level, 2.4 times that of the control.
3. Vitamin E shortened the period reaching the cessation of hair growth. In the present experiment, the period was 10 weeks at the vitamin E applied parts and 13 weeks at the control part.
4. Little difference was observed between α-tocopherol and α-tocopheryl acetate, but the former seemed to have a rather higher immediate action.