Details: Go beyond surface whitening with Rembrandt s Deeply White + Peroxide Whitening Toothpaste. Tooth discoloration is caused by two types of stains: surface stains and deep stains. Unlike most whitening toothpastes which only whiten on the surface, our daily-use deep whitening formula is designed to remove stains under the surface, giving your smile a deeper white appearance. In fact, your teeth will be 3 shades whiter in just 1 week.* Our formula contains powerful ingredients that both whiten and protect your teeth. Rapid-release peroxide starts working on contact to whiten deep stains while sodium fluoride restores tooth enamel to prevent cavities. Rembrandt Deeply White + Peroxide Whitening Toothpaste features a refreshing, fresh mint flavor that leaves your mouth feeling clean and invigorated. For best results, brush teeth twice daily. Developed by cosmetic dentist and whitening pioneer, Dr. Robert Ibsen, Rembrandt was the first-ever whitening toothpaste on the market. While the whitening category has grown over the years, Rembrandt —unlike other whitening brands—remains solely centered on teeth whitening. Prepare your best smile with the full suite of Rembrandt products. *When used with Rembrandt Whitening Toothbrush or Rembrandt Sonic Whitening Toothbrush. Individual results may vary.