I don't klnow about Rogain, but a man here at work tried it. He'd reached the early forties, started to lose, became VERY concerned. He went to the doctor, was perscribed Rogain. He use the treatment for a few week. Each day you'd see him in is cubicle looking in the mirror. About every few weeks, I get in early, get a pair of drafting sissors, cut hair off my arm over is deskpad. Like to drove him nuts!