Dental Advisor has named FGM’s Wit Essential the Top Take-Home Whitening System for 2020. With potassium nitrate and sodium fluoride for desensitization, Wit Essential’s pH is close to neutral. It also only requires an hour of daily wear time. Its high water content also is designed to maintain tooth hydration and prevent sensitivity. And, its viscosity enables it to stay where it’s placed, FGM says. It comes in 22%, 16%, or 10% carbamide peroxide. A 3-g syringe costs as low as $3.20.