Growing hair is a continual process with 3 distinct phases lasting anywhere from weeks to years. Minoxidil will help revitalize hair follicles to move them from the resting to the growth phase and regrows hair. To see the maximum benefits, minoxidil must be used twice per day. Once someone has reached their hair re-growth goal, they are going to want to maintain this by continuing to use minoxidil twice per day. If someone stops using minoxidil, they will lose the hair they have been able to re-grow. Again since growing hair is a continual process, they may not notice the decrease in hair growth for several months.