According to the U.S. Transportation Security Administration, air travelers may now carry liquids, gels and aerosols in their carry-on bag when going through security checkpoints. With certain exceptions for prescription and over-the-counter medicines, baby formula, breast milk, and juice, and other essential liquids, gels, and aerosols, the following rules apply to all liquids, gels, and aerosols you want to carry through a security checkpoint. Three. All liquids, gels and aerosols must be in three-ounce or smaller containers. Larger containers that are half-full or toothpaste tubes rolled up are not allowed. Each container must be three ounces or smaller. One. All liquids, gels and aerosols must be placed in a single, quart-size, zip-top, clear plastic bag. Gallon size bags or bags that are not zip-top such as fold-over sandwich bags are not allowed. Each traveler can use only one, quart-size, zip-top, clear plastic bag. One. Each traveler must remove their quart-sized plastic, zip-top bag from their carry-on and place it in a bin or on the conveyor belt for X-ray screening. X-raying separately will allow TSA security officers to more easily examine the declared items. Please keep in mind that these rules were developed after extensive research and understanding of current threats. They are intended to help air travelers bring essential toiletries and other liquids, gels and aerosols for short trips. If you need larger amounts of liquids, gels and aerosols such as toothpaste or shampoo, please place them in your luggage and check them with your airline.