Want to take Vaseline On A Plane? "Is vaseline a liquid tsa?" When packing for a trip, travellers frequently wonder if certain items—like Vaseline—are regarded as liquids by the Transportation Security Administration (TSA). To avoid any problems at airport security checkpoints, travellers should follow the 3-1-1 rule and pack small containers of Vaseline in their carry-on luggage, while larger containers should be...