Equate Professional White 18 Day Whitening Strips have superior whitening performance. The EasyFit design provides a comfortable fit excellent adhesion and easy application for both upper and lower teeth. They remove stain build-up from tooth enamel and years of tough coffee wine and smoking stains for a whiter smile. These enamel safe teeth whitening strips use our highest level of peroxide available for your whitest white smile. To maintain a whiter smile use this product every 3 months or as needed. Each box contains 36 strips: 18 EasyFit treatments. Compare to Crest 3D WHITESTRIPS PROFESSIONAL BRIGHT.* Making the right health decisions can be challenging. With a complete range of products and simple solutions Equate allows you to take care of your family with confidence. *Crest and 3D WHITESTRIPS are registered trademarks of The Procter & Gamble Company or one of its affiliates.