vixen, the summer after my first year in college, i decided to find out just how long those chin hairs would grow if i allowed them to. i discovered they have indeterminate growth, and by august i was looking like a japanese wiseman. plus i couldn't stop myself from fiddling with them... i've shaved ever since. it takes about two seconds, and i save SO much time in explaining to nosey strangers.leg hair i trim to 3/4 inch. : )