For example, one 2004 study studied minoxidil treatment in almost 1,000 men. Researchers ... Both Nioxin and Rogaine offer two types of minoxidil options — a foam and a solution.

Men’s Rogaine 5% Aerosol Foam Men’s Rogaine 2% Solution Men’s Rogaine Extra Strength 5% Solution Women’s Rogaine 5% Aerosol Foam Women’s Rogaine 2% Solution All of these products are ...