Regaine foam for men 1 month supply provides you with a twice a day leave in hair foam that can be used right at the site of hair loss to prevent further loss and encourage re growth how it works regaine foam contains the active ingredient minoxidil this reinvigorates shrunken hair follicles increases and prolongs the hair growth phase and helps your hair grow longer and thicker over time user friendly easy to use as part of your daily hair care routine fast drying less messy than other