Regaine 5% Men Extra Strength Scalp Foam contains minoxidil, the only OTC active ingredient that is clinically proven to help stop and even reverse hereditary hair loss and hair thinning in men. Regaine hair regrowth foam is proven to regrow hair. 9/10 men said they kept or regrew hair after 16 weeks when applied twice a day. When used twice a day, clinically visible results can be seen as early as 8 weeks. The earlier you start using Regaine, the higher your chances of seeing results. Regaine Foam is scientifically proven to help reverse hereditary hair loss. It is a white to off white foam; designed to dissolve into the scalp and be rapidly absorbed. During the first few weeks of use there may be a temporary increase in hair shedding. This is a good sign and means that the new hair growth cycle is beginning!