Using all-natural gels and fully customized tooth trays, Pro Smile Teeth Whitening brings professional-caliber dental treatments to homes across the country. After molding the kit to their own teeth—a process that takes just over a minute—customers fill the tray with gel and start their smile-brightening journey. Enhanced with an optional LED treatment, the whole procedure takes about 30 to 60 minutes a day for 7 to 14 days, and results last up to six months with regular brushing. The trays retain their shape permanently, so unless customers lose them or sprout a set of tusks, they can repeat the whitening process as often as necessary by ordering gel refills.