Alexandre Chagnon · 8 years ago
Minoxydil/Rogaine is a gel that is applied to the scalp twice a day and left on for a minimum of 4 hours per application. This product may cause irritation, itching and, more rarely, increased hair loss during the first two months. The effectiveness is observable in 2 to 12 months and in people who see an improvement, the product should be continued for life, because a few months after stopping, the hair loss will return. Note that people with heart problems and low blood pressure should be careful with this product.