Yes, liquid, gel, and aerosol makeup must strictly follow the TSA's 3-1-1 rule for carry-on luggage. This means items like foundation, mascara, lip gloss, and liquid eyeliner must be in containers of 3.4 ounces (100ml) or less and all fit inside a single, quart-sized, clear plastic bag. However, solid makeup—such as powder blush, eyeshadow palettes, solid lipsticks, and eye pencils—does not count as a liquid and can be carried in your bag in any quantity without restriction. This is a common point of confusion; if you can pour it, pump it, or spread it (like a cream), it’s a liquid. Items like makeup wipes are also a "pro-traveler" loophole, as they are considered solids and do not need to go in your liquids bag. In 2026, while some airports with advanced CT scanners allow you to leave your liquids in your bag, the 100ml volume limit per container still applies globally. To save space in your one allowed clear bag, it is best to pack your "solid" cosmetics separately in a standard makeup bag.