Stick deodorant is fine in any size. Well, almost any size… Powders and crystals are good to go as well. Spray, Gel, Liquid, Cream, Pastes, and Roll-On deodorants need to be in containers no larger than 3.4 ounces and placed in a clear quart-sized baggie.

Yes, you can carry deodorant in your hand luggage, but the rules depend strictly on the form of the product. For 2026, standard international security protocols (like the TSA's 3-1-1 rule) classify liquid, gel, and aerosol deodorants as "liquids." This means they must be in containers of 3.4 ounces (100ml) or less and must fit inside a single, quart-sized clear plastic bag. Conversely, solid stick deodorants are not considered liquids and can be carried in any size and quantity in your carry-on without being placed in the clear plastic bag. If you use a spray or a roll-on that is larger than 100ml, it must be packed in your checked baggage to avoid confiscation at the security checkpoint. Some modern airports in 2026 are installing advanced CT scanners that may eventually relax the "separate bag" requirement, but the 100ml volume limit for liquid-based deodorants remains the standard for the vast majority of global air travel to ensure passenger safety.