When you shed in a short period of time. Say less than a year. And lets say you shed from some cause, minoxidil, or a shampoo or whatever and if your hair has been thin for months/a year. Im not talking shedding from propecia due to response, but maybe some sort of jerk reaction to ANYTHING. 1. Will this shedded hair grow back? 2. Has it been lost forever? If I shed alot of hair due to minoxidil, does this mean the hair is gone?