Opalescence Boost includes Ultradent’s patented and scientifically proven PF technology for stronger enamel, decreased sensitivity, and caries prevention. Clinical studies have shown that excellent in-office whitening results do not require the use of a light. It has maintained its powerful and chemically activated 40% hydrogen peroxide solution, now with the added benefit of PF technology. The unique syringe-to-syringe mixing system ensures freshness in application, while the distinct red color makes the gel easy to apply and remove. For more information, call (800) 552-5212.