Walgreens has Colgate Optic White Stain Fighter or Total Toothpaste  on sale for $3.99 each
Buy 2 and use the $4/2 Colgate Optic White Stain Fighter 4.2 oz or Total 4.8 oz or Colgate Anticavity 6 oz 2pk Toothpastes digital coupon.
You get $4 Walgreens Cash when you buy 2 to make them free.