A subtle shade of yellow is great for wall paint, a new sweater or a glass of lemonade but is not a welcome hue for teeth. If age, coffee drinking or smoking has darkened your enamel, today's deal will have you grinning again at 78% off. The Go White Smiles home-whitening system is the same kit sold by dentists. The non-peroxide kit uses sodium perborate to brighten those chompers quickly and easily. Go White Smiles' kit contains a whitening agent, activation spray and retainer and packing case. Use the home-whitening system to keep up your whiter shades after a dentist's session or on your own to get those pearly not-so-whites back to their original hue. Smile!