Rogaine foam minoxidil reviews have given us an idea on how to use a minoxidil product in the form of a foam. Its active ingredient, which is minoxidil helps promote hair growth by allowing the hair follicles to receive more blood flow. It is a topical solution and it must be applied with care. Try not to let your hand come into contact with the foam because you might accidentally rub your eye. This would cause eye irritation because minoxidil is a very strong chemical. Other side effects would include itchiness and scalping. If you use this product, you will see visible results after a few months. However, you need to continue using this product because its effects wear off if you stop using it. Your hair loss will return when you quit this product. Rogaine foam has only been tested for use on the scalp and it is advisable that you don’t use it on other parts of the body.