If you’re shopping in stores at Walgreens, you can get Crest mouthwash and Oral-B toothbrushes for as low as free. This week, select Crest and Oral-B products are on sale for $4. You’ll also earn $4 Register Rewards when you buy two. If you’re a new Walgreens shopper, sign up for an account to be eligible for this sale and promotion.

In the scenarios below, we’ll show you all of the best deals available. Keep in mind that Register Rewards have a limit of one per transaction. If you plan to do more than one of these deals, make sure you separate your transactions, as you can only earn one Register Reward promotion per transaction. Also, remember not to pay with the Register Reward you received from the first transaction. Learn more about how to coupon at Walgreens.

Best Deal

For the best deal, clip an Oral-B coupon in the store app and from the Nov. 22 Procter & Gamble (PG) newspaper insert. Use these coupons to purchase Oral-B manual toothbrushes. You’ll pay $4 out of pocket and receive a $4 Register Reward, making them both free.

Buy 2, receive $4 Register Reward through Dec. 5

Use one $2.00/1 Oral-B Pulsar or Adult Manual Toothbrush Multi-pack, Walgreens L2C Coupon (exp. Dec. 27) (walgreens.com)

And use one $2.00/1 Oral-B Adult Manual Toothbrush or Toothbrush Multipack from PG Nov. 22

Pay $4, receive $4 Register Reward

Final Price: Free, when you buy 2

Smartphone Only

Here’s an easy way to stock up on Crest and Oral-B. Just clip a $3/2 digital coupon to pay $0.50 each.

Or Oral-B Adult Manual Toothbrush (reg. $4.99) $4, sale price through Dec. 5

Buy 2, receive $4 Register Reward through Dec. 5

Use one $3.00/2 Crest Adult Toothpaste 3 oz or more, Mouthwash 473 ml or larger, Oral-B Mouthwash 475 ml or larger, Adult Manual Toothbrush, Glide Floss, Floss Picks, Interdental Brush, Picks or Fixodent Adhesive 1.4 oz or larger, Walgreens L2C Coupon (exp. Dec. 27) (walgreens.com)

Pay $5, receive $4 Register Reward

Final Price: $0.50 each, when you buy 2

$1 Crest Mouthwash

Want to stock up on Crest Mouthwash? Clip Crest coupons in the Walgreens app and from the Nov. 22 Procter & Gamble (PG) newspaper insert. After all the savings, you’ll get each bottle for only $1.

Buy 2, receive $4 Register Reward through Dec. 5

Use one $1.00/1 Crest Mouthwash 16 oz or larger, Walgreens L2C Coupon (exp. Dec. 27) (walgreens.com)

And use one $1.00/1 Crest or Oral-B Mouthwash 16 oz or larger from PG Nov. 22

Pay $6, receive $4 Register Reward

Final Price: $1 each, when you buy 2

see more Walgreens deals here