Hi, i will be 20 in like 3 weeks and my hair is falling out..there is always so much hair in my brushes... I have really straight hair and it used to be really thick...Does anyone know of any good hair products that work well?? Or something else i can do to make my hair grow back thick and long?? I really dont want to cut it either, that would be my last resort.. I trim it once in awhile though...please help