Scientific innovation


Le rôle de l’alcool

The Role of Alcohol

Alcohol: How an inactive ingredient delivers the active ingredients

LISTERINE® Antiseptic’s alcohol-containing products use only pharmacopoeial (USP) grade alcohol. Even though alcohol is an inactive ingredient, it plays two very important roles that contribute to the effectiveness of LISTERINE® Antiseptic rinses:

  • Alcohol acts as a solvent to help solubilize the ingredients
  • Alcohol also acts as a vehicle for delivering the active ingredients
  • Alcohol enables the 3 Essential Oils to penetrate the plaque biofilm or bacterial communities

For more information about the safety and tolerability of LISTERINE® Brand rinses, click here.

To go deeper into the science behind LISTERINE® products, you can explore the clinical data by clicking here.

You can also learn more about the 6-month clinical studies where LISTERINE® Antiseptic rinses demonstrated a significant reduction in gingivitis by clicking here.


The fixed combination deeply penetrates plaque biofilm, killing bacteria and inhibiting growth