The supersmile Quickee Whitening Stick with Calprox is for on-the-go instant teeth whitening and stain removal. Formulated with our proprietary ingredient Calprox. It works by gently dissolving the protein pellicle, a thin layer of protein that forms on the surface of teeth, to which plaque, bacteria, and stains adhere. Without the protein pellicle to latch onto, stains are brushed away leaving noticeably whiter teeth and a smoother surface. Convient no rinse quick dissolving formula. Freshens breath, gives a "just brushed" feeling. Developed by the "Father of Aesthetic Dentistry", Dr. Irwin Smigel. Made in USA.