Oral sprays may be carried onto an aircraft, provided they meet specific conditions: the container size must not exceed 100 milliliters, and it must be carried as a single item within your carry-on luggage. The specific guidelines are as follows:
Volume Limit: According to Civil Aviation Administration regulations, when traveling on domestic flights, the maximum volume for liquid cosmetics (including sprays) carried in your hand luggage is 100 milliliters. The "100 milliliters" limit refers to the volume capacity printed on the container itself, not the actual amount of liquid remaining inside. For example, if a spray bottle has a capacity of 150 milliliters-even if it currently contains only 50 milliliters-it does not meet the carry-on requirements.
Item Limit: You are permitted to carry only one item of each specific type of cosmetic product, and all such items must be placed together in a single transparent, resealable plastic bag (typically with a 1-liter capacity). If you need to carry multiple liquid items (such as toner, lotion, etc.), you must ensure that each individual container does not exceed 100 milliliters and that all items are consolidated within this single bag.
Checked Baggage Option: If an oral spray container exceeds the 100-milliliter limit, it cannot be carried in your hand luggage but may be checked in as hold baggage. Please note that the total volume of liquids checked in must comply with the airline's specific regulations, and the packaging must be leak-proof and sufficiently durable to prevent breakage.
Ingredients and Properties: If an oral spray contains flammable or explosive ingredients (such as a high concentration of alcohol), it may be classified as a hazardous material; carrying or checking in such items is strictly prohibited. These items are typically clearly marked on the product label; you should carefully review the ingredients list to verify compliance.
International Flight Variations: International flights may enforce stricter liquid restrictions (e.g., individual containers not exceeding 100 milliliters, with a total aggregate volume not exceeding 1 liter). Furthermore, certain countries or regions may impose additional restrictions on specific ingredients (such as alcohol). It is recommended that you consult the airline's official website or contact the airport security department prior to your trip to confirm the specific requirements for your destination.
Other Important Considerations:
Security Screening Process: When passing through security checkpoints, you must remove the transparent plastic bag containing your liquid items from your carry-on luggage and present it separately for inspection. If security personnel request to open a container for inspection, you must cooperate with their instructions.
Special Circumstances: If you require a large-capacity oral spray (e.g., a medicated spray) for medical reasons, you may contact the airline or the airport security department in advance to request special permission or to inquire about carrying it with supporting medical documentation.
Alternatives: If the volume of your spray exceeds the allowable limit and cannot be checked as luggage, you may opt to purchase a small-capacity travel bottle (≤100 ml), transfer the contents into it, and carry that with you; alternatively, you can purchase travel-sized products that already comply with regulations.
Summary: Whether or not you can bring an oral spray on a plane depends on its volume, quantity, and ingredients. Sprays with a volume of 100 ml or less-provided they are carried as a single item-may be taken as carry-on luggage; however, items exceeding this volume or containing hazardous ingredients must either be checked as luggage or surrendered. Before traveling, it is advisable to verify the product label and consult your airline's specific regulations to avoid any travel delays caused by non-compliance.