Walgreens has Crest Pro-Health Complete Protection Toothpaste for $4.99, buy 2 and they have Crest Pro-Health Advanced Whitening Toothpaste on sale for $3, buy 1.
Use the $3/2 Crest Toothpastes digital coupon
Use the $1/1 Crest Toothpastes digital coupon
You get $5 in register rewards. Use the $3 Crest Pro-Health Complete Protection Toothpaste Ibotta offer(limit 2), to make it free.