Brighten Your Smile, Brighten Your Life! 😁 Perfectly formulated for adult teeth whitening. Achieve 7 levels whiter in just 11 days! Advanced Seal Technology ensures strips stay put. Erases over 10 years of tough, set-in stains. Uses the same powerful ingredients as dentists. 7 Levels Whiter No-Slip Grip Enamel Safe The Crest 3D Whitestrips Bright Levels kit offers 11 treatments designed to deliver a stunning 7 levels of whitening in just 11 days. Utilizing professional-grade whitening ingredients, these enamel-safe strips effectively remove over a decade of tough stains while ensuring a secure fit with their Advanced Seal Technology.