MINOXIDIL IS AN ANTIHYPERTENSIVE HAS A POWERFUL VASODILATOR, THE PATTERN OF ACTION RESEMBLING HYDRALAZINE. CHRONIC THERAPY WITH MINOXIDIL CAUSES EXCESS HAIR GROWTH ON FACE AND ARMS (DUE TO ENHANCED CUTANEOUS BLOOD FLOW). IT HAS BEEN TRIED TOPICALLY IN ALOPECIA WITH GOOD RESULTS IN SOME CASES.