Mouthwash
Mouthwash is allowed in carry-on only in 3.4 oz containers, or full-size in checked bags.
Carry-on
Allowed with conditions
Checked
Allowed
Carry-on details
Allowed with conditions. Mouthwash is a liquid and must be in a container of 3.4 oz (100 mL) or less to fit in your carry-on liquids bag.
Checked-bag details
Allowed at full size in checked baggage, with no quantity limit.
Quantity limit
3.4 oz (per container)
Related rules
FAQ
- Can I bring a full-size bottle of mouthwash in my carry-on?
- Only if the bottle is 3.4 oz (100 mL) or smaller. Larger bottles need to go in checked luggage, where there's no size limit.
Related items
Source: TSA — What Can I Bring? · Last verified: 2026-07-30
Final decision rests with the security officer at the checkpoint.