Colgate Optic White Overnight Teeth Whitening Pen, 35 Nightly Treatments in 1 Pen, Removes 15 Years of Stains in 1 WeekEnamel safe teeth whitening serum formula designed to minimize tooth sensitivity, removes 15 years of Stains in 1 week.Easy to use tooth whitening pen features a precision brush to target the surface of each tooth, control the whitening serum applied and minimize irritation and tingling sensation by avoiding contact with gums and soft tissueDry your teeth and apply the teeth whitening treatment at night after your regular oral care routine, right before going to bed; use for 1 weeks.The teeth whitening serum is designed to rapidly dry; clumping may occur on the pen brush or on the tooth surface, to remove click pen and allow serum to run through bristles. Dry with a clean tissue. Do not clean with water. Click to close.The teeth whitening pen contains 3% hydrogen peroxide and is a vegan, gluten free and sugar free teeth stain removerIncludes: (1) teeth whitening pen, (1) overnight stand to store; 35 nightly treatments in 1 penThe tooth whitening serum forms a film on the tooth surface overnight. Brush teeth in the morning to remove."Whiten teeth while you sleep. In as little as a week (two weeks of treatment is recommended for best results), these Optic White teeth whitening pens whiten your teeth up to two shades and have 15X more whitening power in 1 treatment versus brushing alone, unlike other tooth whitening pens. The whitening pen pack includes one tooth whitener pen and one overnight stand for easy storage next to the sink or countertop. Gentle Whitening: We know teeth whitening sensitive teeth can be a pain. That's why our enamel safe tooth whitening serum formula has been designed for no sensitive teeth during and after the whitening process.Voted the Best New Teeth Whitening Treatment by Consumers**Best New Product for Teeth Whitening Treatment in a 2022 BrandSpark® survey