Choose Subscribe & Save to get the absolute lowest price. This three-pack of Colgate Optic White toothpaste drops to $7.99 with the on-page coupon applied automatically at checkout, down from the $14.99 list price. The formula uses 2% hydrogen peroxide, the same whitening ingredient dentists use, and is designed to be safe for enamel with daily use. Prime members get free shipping.  Buy Now at Amazon