Boost any toothpaste with Smileactives Pro Whitening Gel, featuring foaming action that helps remove surface stains and whiten teeth while you brush. This set of four gives you extras to drop in stockings or get everyone's grin ready for holiday photos. In an expert grader analysis, Pro Whitening Gel whitened teeth an average of three shades in seven days (with a maximum of five shades) and whitened teeth an average of 4.6 shades in 14 days (with a maximum of eight shades). How do I use it: Dispense equal parts toothpaste and gel onto toothbrush; we recommend one pump of gel every time you brush. You may need to pump several times with first use to dispense gel. Brush teeth for two minutes. Rinse thoroughly with water. Use twice daily. From Smileactives. Includes: