Using this eyeliner is easy. Just hold it like a pen and gently draw a line along your lash line. Start from the inner corner of your eye and move towards the outer corner. You can make the line thin for a natural look or thick for a more dramatic effect. When you're done, let it dry for a few seconds. Keep it away from heat and direct sunlight. Also, make sure to close the cap tightly after use to prevent it from drying out. If it gets into your eyes accidentally, rinse your eyes with plenty of water immediately.