A radiant smile can win the public’s heart, launch a modelling career, or light a ship’s way through an angry squall. Become a beacon with today’s Groupon: for $29, you get an at-home professional teeth-whitening kit from Pearl White Solutions (a $299 value). Each kit includes:

• Two bottles of professional-grade, water-based teeth-whitening gel—enough for 20 at-home treatments—composed of 35 per cent carbamide peroxide to hydrate teeth, reduce sensitivity, and minimize tissue irritation
• Heat-and-form mouth trays for upper and lower teeth
• Shade guide
• Instructions<p>

Pearl White Solutions’ at-home teeth-whitening kit, delivered free of charge, supplies smiles with up to a year’s worth of whitening power. Heat-and-form dental trays adhere to top and bottom teeth in about 30 seconds, creating custom-fitted enamel armour ready to defend against stains and errant hockey pucks. An included shade guide then helps mouth owners track progress more easily than finding a matching egg after each treatment. Pearl White recommends 10–12 treatments for the first month—done in 15- to 20-minute sessions on consecutive days—followed by one treatment every six weeks for the remainder of the year. Pearl White also recommends seeing a dentist before treatment to take care of possible cavities and check on fillings, due to the fact that teeth are alive and their enamel composition, colour, and career aspirations continually evolve.

Though Pearl White Solutions sometimes features a discounted price online, this Groupon still offers the best deal available.