🦷 Mouthwash

Mouthwash is a liquid, and a standard pharmacy bottle is typically 250ml to 1 litre — well over the 100ml carry-on limit. Screeners will confiscate it at the checkpoint. You will be offered the option to return it to a checked bag if you have one, or to surrender it. Travel-size mouthwash (100ml or under) is fine to carry through.

Yes — the 100ml liquid limit for carry-on applies universally across all major aviation regions. Mouthwash with a higher alcohol content, such as some antiseptic rinses, does not trigger any additional rule beyond the standard liquid limit in most regions. The rule is effectively identical whether you are departing from the US, Europe, the UK, or Asia-Pacific.

The liquid volume rule is enforced strictly — there is no discretion around container size for mouthwash. The alcohol content of the product does not create an additional restriction at the checkpoint (unlike spirits, which have their own rules), so a strong antiseptic mouthwash is treated the same as an alcohol-free one as far as carry-on screening is concerned.

Buy a travel-size bottle under 100ml — most major brands offer them, and they are stocked at airport shops if you forget. You can also pour a small amount into a reusable travel bottle from a larger container at home. The bottle must fit in your clear liquids bag alongside your other toiletries, so factor that in when choosing a container size.