With its crystal-clear, dye-free formula, Preventech’s Dayli® 1.1% NSF brush-on gel is the clear choice to relieve discomfort commonly associated with whitening procedures. The prescription strength gel offers maximum fluoride protection (5,000 ppm) and maximum sensitivity relief (5% Potassium Nitrate). Dayli is available in fresh mint and grape flavors. It is sweetened with Xylitol, a proven plaque inhibitor. Like all Preventech products, Dayli comes with a 100% satisfaction guarantee.