Pepsodent AE
Kids gargling at school
1ml of saliva₆
1 cough = 200million viral particles₅
1 cough = 200million viral particles₇
Back of throat = viral load reservoir₈
covid illustration
coronavirus infographic
reduce transmission of coronavirus

Mouthwashes that contain alcohol (ethanol) typically contain it at 11–14%. Evidence suggests that when used at this concentration and for the normal duration recommended for mouth washing (30 seconds), ethanol is unlikely to be effective against viruses. For this reason, CPC Technology in a mouthwash is thought to be better at reducing the amount of coronavirus in our tests.

The studies follow ongoing discussions in the global medical and scientific community around the potential use of mouthwash as an additional measure to help reduce the spread of the coronavirus. Unilever conducted this research to see if certain types of mouthwash could potentially provide a further preventative measure which people can take to help reduce the spread of the coronavirus.

The results show that a cetylpyridinium chloride (CPC) mouthwash is effective in reducing the amount of virus by 99.9% after 30 seconds of rinsing. We tested on a variety of formulations, and the one containing CPC Technology was the one that proved most effective. 30 seconds is the recommended usage of mouthwash, and the tests reflected this contact time. Therefore, these findings suggest that regular use of a mouthwash containing CPC Technology could help prevent spread of coronavirus.

Previous studies from other scientists have shown that using a mouthwash could reduce the amount of virus for up to six hours in people’s mouths [include footnote: "Efficacy of commercial mouth-rinses on SARS-CoV-2 viral load in saliva: Randomized Contral Trial in Singapore (non-Unilever research)"]. This suggests that using mouthwash with CPC could provide protection against the spread of coronavirus for several hours.

No. The study results do not show that CPC is a treatment for COVID-19, nor a guarantee that it will prevent transmission of the virus. Established protective measures advised by health authorities should continue to be followed, including hand washing, physical distancing and wearing masks.

Please follow the usage instructions on pack. Signal Active Defense mouthwash is not suitable for children under the age of 12.

Mouthwash with CPC Technology is proven to be efficacious for plaque prevention and as such plays an important role for good oral health. The product also provides reach to parts of the mouth that are difficult to clean with a toothbrush such as the back of the mouth and in between the teeth.

Use of Signal Active Defense mouthwash containing CPC Technology twice daily for 30 seconds is the recommended usage for good oral health. Gargling or a full rinse is the best usage in order to ensure covering all surfaces of the mouth. Our mouthwash containing CPC Technology should not be used by children under the age of 12 and you should always follow the on pack instructions before use.