DESCRIPTION & BENEFITS: This is an on-the-go touch-up whitener that once applied, continues to work for up to 3 hours. It will help teeth maintain results of in-salon professional treatment. HOW TO USE: Roll up pen until gel appears. Lightly brush gel over surface of teeth. Avoid eating, drinking or running tongue over teeth for 30 minutes after applying. Do not rinse. Apply 2 times daily twice a week to maintain results. HIGHLIGHTED INGREDIENTS: Hydrogen Peroxide: A dental cleanser and whitening agent.