Achieve professional-grade whitening with Crest 3D White Whitestrips Professional Effects, designed to erase 14 years of teeth stains for a noticeably brighter smile. These Whitestrips act as a gentle eraser for your teeth, delivering visible whitening in just 3 days and full results within 20 days. With their no-slip grip, the strips stay securely in place, allowing you to talk and drink water while whitening. Our exclusive FlexFit technology ensures the strips stretch to cover 30% more of your smile* compared to non-flexing strips. Experience professional-level teeth whitening results without the hefty price tag with Crest 3D Whitestrips Professional Effects Teeth Whitening Strips Kit, offering 20 treatments.