We're a generation that loves coffee, soda, and a variety of delicious foods. However, our favorites can leave residue and eventually result in yellowish teeth. If you search for a professional yet affordable at-home whitening system for natural teeth, you better get this Pur White Smart Advanced Teeth Whitening Kit. Featuring smart LED technology and advanced whitening gel, you'll get maximum whiteness with less irritation than popular brands. It also has an on-the-go pen so you can get to those hard-to-reach spots. It whitens your teeth without hurting the enamel and causing sensitivity.