After you have washed your hands with soap and you still have ink on them, you could try lava soap - it has bits of pumice in it. Hair spray is also a good one. Spray the area and leave for about 10 seconds and then wash it off with warm soapy water. Be careful not to break the skin if you do decide to use a very weak solution of bleach after that - and moisturise your hands thoroughly.Hope it works for you.