Wash your hands with warm water and dish soap
Scrub between your fingers and under your nails
Use a nail brush or soft toothbrush if needed
Rub your hands with a little oil, then wash again
Use a paste of baking soda and water, then rinse
Wipe with a damp cloth and soap if you are away from a sink
Repeat washing if the color remains
Dry your hands with a clean towel after washing