Are you looking to maintain your bright smile? PerioSciences Post-Teeth Whitening Mouthwash is a powerful antioxidant-based oral rinse that soothes oral tissues after whitening procedures, refreshes breath, and boosts whitening treatments to last longer. Unique citrus extracts nourish and bathe oral tissues while micro-minerals help prevent stains and make teeth more resistant to acids from food and beverages, leaving you with a bright healthy smile. Experience the best whitening mouthwash for longer-lasting results and a brighter, healthier smile. Considered the best whitening rinse for yellowing teeth, it helps keep your teeth looking their whitest and freshest.