We use the Lumibriteā¢ take home whitening system. The system requires fabrication of custom bleach trays made on models of your teeth. The whitening agent in this product is prescription level (32%) Carbamide Peroxide. Between the high concentration of the bleaching agent and the custom trays, this systems works quickly and more effectively while using less product than over-the-counter whitening agents. The custom trays also help protect your gum tissue from damage by providing and exact fit to your teeth.