This teeth whitening refill set supports ongoing stain care after an initial whitening course, combining three whitening pens for 30 top-up treatments with 100 ml of fluoride-free whitening toothpaste. The pens are the same type used in the SmilePro Advanced Teeth Whitening Kit and are used with its LED light. Brush twice daily with the toothpaste. Every two weeks, apply the gel and use the SmilePro light for a 10-minute top-up; the source instructions suggest weekly top-ups for heavy coffee, tea or red wine drinkers. Wait one hour after each treatment before eating or drinking anything except water. SmilePro states that the pens last about a year and the toothpaste about two months. The gel is described as containing 6% hydrogen peroxide with potassium nitrate. This set is intended for adults and has the safety restrictions listed below. Features Three whitening pens for 30 top-up treatments 100 ml fluoride-free whitening toothpaste for daily stain care 10-minute top-up routine used with the SmilePro LED light Pens and toothpaste support continued care after an initial course Specifications Set contents: 3 whitening pens and 1 whitening toothpaste Whitening pen coverage: 30