Try using nail polish remover. Yeah I know it's bad BUT it will do the job. Just make sure AFTER you've used the nail polish remover to wash your hands with soap and put some intensive hand lotion to not damage the skin on your hands. Nail polish remover can be some unhealthy stuff
Just keep washing your hands, nout else you can do sadly, just keep using soap every time you wash them, just give a good scrub before rinsing but it will probs take a week or so to come out of your skin.