You’ve never seen teeth whitening like this! The all-new Crest Whitening Emulsions is a breakthrough formula featuring a thin layer of highly active peroxide droplets suspended in a hydrating base to whiten teeth with virtually no sensitivity. This means it applies in seconds and stays on teeth longer* to continue whitening long after you apply, with no need to rinse or brush off. Just squeeze onto the wand, apply on your teeth, and boost with with the LED Accelerator Light for even better teeth whitening results vs. Crest Whitening Emulsions alone. Crest Whitening Emulsions removes stains and leaves your teeth 100% whiter*. *vs ARC pen whitening.