This works best for dry-erase markers that have a chisel-shaped nib. Work over a sink or put some paper towels down in case leftover ink comes out from the end of the marker. The ink will soak through the dried end of the tip again, so you can try flipping the nib if the marker ever dries out again.

The force from spinning your marker will push all of the ink to the tip so you can get a little more life out of it. You may be able to get similar results just by shaking the marker in your hand. If you need to revive multiple dry-erase markers, put them in a cup with the tip side down. Tape the string to the outside of the cup and quickly spin it around. The force from spinning the cup will keep the markers from falling out.

If your marker doesn’t come apart, getting a new marker may be the best solution.

Tape your marker to the edge of the bowl or lean it up against something so it stays upright.

Be careful handling the ink pad since it could get permanent marker ink on your skin.

This also works well for highlighters since they’re water-based. When you’re finished using your markers, dip the tips in the water for 5 seconds before putting the cap on them. Then wait 1 day before using them again. [8] X Research source

Avoid completely filling the marker with water since it will dilute the ink and make it less visible.