This 5-piece teeth whitening kit from Amazon is on sale for just $27.99, marked down from $29.99. It comes with the LED light tray and four pens with whitening serum. Be sure to clip the 25% off coupon on the product page and check out using Subscribe & Save to activate the coupon and save up to an additional 5%. After all the savings are applied, the final price will be as low as $19.59.
For more info on how Subscribe & Save works, be sure to read through our guide. You can easily cancel your Amazon subscription in just three simple steps — just make sure to wait until after your order has shipped.
If this isn't quite what you're looking for, browse through our other teeth whitening deals at any store.