Trust Rembrandt's 1 Week Teeth Whitening Kit to give your smile professional-grade whitening results. You'll get noticeably whiter teeth in just one week of treatments. In fact, our fast-acting formula delivers the power of 2 weeks of whitening in just 7 days. Our formula also uses the same enamel-safe ingredient used by dentists to remove deep stains, so you can feel confident that it's both effective and safe. Our custom-fit whitening strips are designed to stay comfortably in place while whitening both the front and back of teeth. The 1 Week Teeth Whitening Kit includes 28 whitening strips. 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.