Starting from 10/5/14, Walgreens has Colgate Optic white on sale for $3.99. Plus, you can get $2 Register Rewards when you buy one. There is also a SmartSource Coupon Insert from 9/28 for $1.00 off any one Colgate Optic White Toothpaste. You can get Colgate Optic White Toothpaste for $0.99 after sale, coupon and Register Rewards.
Deal Idea:
Buy (1) Colgate Optic White Toothpaste $3.99
Use (1) $1/1 Colgate Optic Toothpaste (SS 9/28)
Pay: $2.99
Get $2 Register Rewards
$0.99 after coupon and Register Rewards
You can check out more Walgreens deals here.