- Advanced Vivid Whitestrips give you a dramatically whiter smile in just 14 days. In fact, you'll start seeing results in just three days. Advanced Seal technology provides a form fit, no slip grip that molds and adheres to your teeth for a better whitening experience. In fact, you can even drink water while wearing whitestrips with advanced seal technology.
Enamel safe: All Crest 3D White Whitestrips use the same enamel safe whitening ingredient as the dentist. (from Crest)