Re: facial hair
Shaving doesn't make it grow faster. Some guys can't grow full beards moustaches and goatees so the smart thing to do is shave evenly all over your face.
Obviously if you do shave, it's going to grow back. Unless you want to have uneven facial hair (which would look ridiculous), then shave it once you notice the hair coming back. It's best to shave all sides of your faces so you're covered and don't have to worry about uneven patches.