if it's deep enough-you have a white thin trace for a while, then little red drops start coming through. and no pain at all. especially if someone throws themselves on your wrist and gently but insistently licks the wound, sucks the blood out, licks the old scars... a smile on his face-pale, closed eyes, blood drying on the lips.YOU CAN NEVER STOP. it is lust, and love, but of a different kind. you will never be the same again.....