Using this Squishmallows pen is super easy. Just remove the cap and start writing or drawing. It's great for kids to express their creativity. When not in use, make sure to put the cap back on to prevent the ink from drying out. Keep it away from small children who might put it in their mouths. You can clean the pen barrel with a soft, damp cloth if it gets dirty. Don't try to take the pen apart as it might damage the ink mechanism. Enjoy creating wonderful things with your Squishmallows pen!