Always first test your marker on a less visible part of your body. Feet are great for this🦶🏽
You can test it on paper, but it may fray the point/nib of your marker. The ink will look different on paper since our skin has a different texture and movement to it.
The marker is permanent on other surfaces so if it gets on something else, quickly try cleaning it off using rubbing alcohol!
💡 If your marker point is fraying, check out this article: When should I replace my marker?