Designs normally start to peel after 6-8 days, at which point most people just rub them off with a little elbow grease.
If you need to remove earlier or your tat has separation anxiety, here are a few other tricks you can try:
- Add baby oil to a damp cloth and rub (Painless)
- Rub vigorously with a dry towel (Uncomfortable)
- Stick duct tape on it and rip like a bandaid (You Badass!)