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Sloosh Twice a Day Total Care Mouthwash - 21 Day Guarantee - LISTERINE®

Did you know that LISTERINE® Advanced White is the most effective whitening mouthwash*, and is clinically proven to help you get a whiter smile in just 2 weeks**?

Cosmopolitan readers have already tried it and love it! 91% of them rated it as very good or excellent***

Try it and see for yourself! If you don’t love the difference after 2 weeks, we’ll give you your money back.

If you want to learn more about LISTERINE® Advanced White and how its non-abrasive formula helps give you a whiter smile in just two weeks click here

Here’s how to take the LISTERINE® Advanced White Challenge:

  • Pick up a promotional bottle of Listerine Advanced White in your favourite store
  • Use twice a day, for a minute each time, for a minimum of 14 days
  • If you don’t love the results, claim your money back by downloading the form below and send (address provided on the form) it with the promotional neck hanger and till receipt.

*Download form

*Terms & Conditions

* In reducing and preventing tough stains in lab studies, compared to market leaders. For more information verifying this comparison please contact [email protected].

** Proven to lift and prevent tough stains

***Tested among 198 Cosmopolitan readers