Developed by Dr. Irwin Smigel, world-renowned "Father of Aesthetic Dentistry". Supersmile is the number one teeth whitening brand recommended by cosmetic dentists. Clinically proven to whiten teeth 6 shades (results may vary) when used in combination with our Professional Whitening Toothpaste. Contains safe, yet powerful, whitening agents such as carbamide peroxide which, when combined with the Professional Whitening Toothpaste delivers the most exceptional whitening results. The Professional Whitening Accelerator gel formula lifts deep-set stains and quickens the whitening process. The Professional Whitening Accelerator must be used with the Professional Whitening Toothpaste. Free of silica, parabens, sulfates, known allergens, animal by-products and BPA. Kosher. Made in USA.