As an expert in travel regulations and guidelines, I'd like to provide you with a comprehensive answer regarding the transportation of deodorant on a plane. It's important to understand the rules set by the Transportation Security Administration (TSA) in the United States, as they are often followed by many other countries as well.
Step 1: English Answer
When it comes to deodorants, the TSA has specific guidelines regarding their size and packaging when traveling by air. Here's a breakdown of the rules:


1. Gel Deodorants: These types of deodorants are considered to be in a liquid or semi-liquid state and are subject to the same rules as liquids, gels, and aerosols. Each passenger is allowed to carry 3.4 oz (100 milliliters) or less of any one of these items in their carry-on bag. These items must be placed in a quart-sized clear plastic bag and are part of the overall 3-1-1 rule, which also includes liquids and gels.


2. Solid Deodorants: Solid deodorants, such as roll-ons or sticks, are typically exempt from the liquid restrictions and can be carried in your carry-on luggage without any size limitations, as they are considered a solid item.


3. Aerosol/Spray Deodorants: These are treated the same as gel deodorants and must also adhere to the 3.4 oz or less rule when carried in the carry-on. If the deodorant is larger than this limit, it must be placed in your checked luggage.


4. Travel-Sized Containers: It's always a good idea to use travel-sized containers for your toiletries, including deodorant. Many stores sell travel-sized versions of common toiletries, which are designed to meet TSA guidelines and make it easier to pack and pass through security.


5. Checked Luggage: If you have a larger size of deodorant that exceeds the 3.4 oz limit, you can pack it in your checked luggage without any size restrictions.


6. International Travel: While the TSA guidelines are a good starting point, it's important to check the specific regulations of the country you are traveling to or transiting through, as they may have different rules regarding carry-on items.

7.
Security Screening: During the security screening process, you may be asked to remove your deodorant from your carry-on bag and place it in a bin for X-ray screening. It's always a good idea to pack your carry-on items in a way that makes them easy to access and remove if necessary.

8.
Safety Precautions: For safety reasons, flammable or explosive aerosol products are not allowed in either carry-on or checked luggage. Make sure your deodorant does not fall into this category.

9.
Contact TSA: If you have any doubts or questions about what you can bring on a plane, it's always best to contact the TSA directly or check their official website for the most current and accurate information.

By following these guidelines, you can ensure a smooth travel experience and avoid any issues at the security checkpoint.

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Gel deodorant and aerosol/spray deodorants must be 3.4 oz or less and placed in a quart sized baggie. Larger sizes can be placed in your checked luggage. ... You can find deodorant as well as many other toiletry items in travel size containers.Sep 3, 2010read more >>