Crest 3D White Brilliance Toothpaste System | $8 | Amazon | Clip the $2 coupon
Graphic: Shep McAllister

Crest 3D White Brilliance isn’t just toothpaste - it’s a two-step system for whitening your teeth. First, brush your teeth for one minute with the toothpaste from the Step 1 tube, then without rinsing, brush for another minute with whitening gel from the Step 2 tube.

If you’re curious to try it out yourself, Amazon’s offering a $2 coupon on the system, bringing it down to $8 at checkout.