The 3-1-1 rule must be followed if you are bringing toothpaste in your carry-on. All liquids, gels, and creams must be kept in transparent, quart-sized zip-lock bags and stored in 3.4 oz or smaller bottles. Each traveller is only permitted to bring one quart-sized bag of toiletries. The acronym for the "3-1-1 rule" is 3 ounces, 1 passenger, and 1 quart-sized bag.We hope that the information provided here about the question[ Can You Bring Toothpaste on a Plane](https://justtravo.com/blog/can-you-bring-toothpaste-on-a-plane/) " is sufficient to satisfy your needs.Make sure to keep your toothpaste in the clear, quart-sized bag somewhere that is easy to get to, preferably in your bag or backpack. This is because, in order to pass through the x-ray machine, you will need to remove your toiletry bag and put it in a different bin.