Diaper cream isn't allowed in your carry on luggage in larger-than-3.4-ounce containers — and you'll probably want to keep a tube with you during the flight. These 0.35-ounce tubes Opens a new window from Aquaphor are small enough to take with you on the plane can soothe irritated skin and help prevent diaper rash.

Yes, nappy cream (diaper cream) is classified as a liquid, gel, or paste by the TSA and other global aviation security agencies in 2026. This means that if you are carrying it in your hand luggage, it must typically adhere to the "3-1-1" rule, meaning it should be in a container of 3.4 ounces (100ml) or less and fit inside a single quart-sized clear bag. However, there is a very important "Medically Necessary" exception. Because nappy cream is considered an essential baby care item, you are allowed to bring larger quantities if you are traveling with an infant. You must declare the cream to the security officer at the checkpoint for manual inspection. They may ask you to open the container or subject it to additional screening (like an X-ray or a vapor test). To make the process smoother in 2026, it is recommended to keep all baby-related liquids, creams, and expressed milk in a separate, easily accessible bag within your carry-on so you can quickly present them for the necessary security checks.