To remove ink stain from my fingers I use household sponge (the abrasive side) to rub my stained skin with some application of liquid soap then flush off with water. It does the job and takes only a minute. Well, it is impossible to reach under my nails. So my nails will remain stained until I take a shower next time. I am refilling with Hobbicolors UW8 ink too. My wife uses a lot of this sponge and throw them away from time to time. I just pick up one that was tossed out by her. The sponge has an abrasive side which is the side I use to rub my stained fingers. Without it it is almost impossible to wash off the stain with the liquid soap and water alone.