just how noticeable are the side effects. my dad and my grandfater are both pretty bald. i only ask cuz im 18 and dont want to wake up tomorrow with missing hair, and i also dont want to have to explain to people where all my hair went. also, will it grow back or will it stay thin. this is prolly a stupid question but if i get a thin sopt i just dont want to have it for the rest of my life