Twist the pen at base to dispense the gel. First use requires additional clicks for the gel to appear. Smile wide, keeping lips away from teeth and apply a thin layer of gel to all teeth. The gel will be activated immediately as it bleaches teeth. Relax the lips after 30 seconds. The gel will slowly dissipate as it continues to whiten. Do not eat or drink for 30 minutes after use. After 30 minutes rinse with clean water. Apply 2-4 times daily for optimum results. Store at room temperature and do not leave in extreme heat.