Regaine extra strength liquid solution for men 12 month pack is scientifically proven to help stop hereditary hair loss it is suitable for men aged 18 to 65 in this multipack you will get 4 boxes of regaine extra strength liquid solution how does regaine workr regaine revives shrunken hair follicles so that they increase in size and are able to regrow thicker hair over time it does this by increasing the supply of blood and nutrients to the hair follicles strengthening existing hair a