Packing skincare for a flight in 2026 requires strict adherence to the TSA 3-1-1 rule for carry-on luggage. All liquids, creams, gels, and aerosols must be in containers of 3.4 ounces (100ml) or less, and all these containers must fit into a single quart-sized, clear, resealable plastic bag. To prevent leaks caused by cabin pressure changes, "decant" your products into specialized travel bottles with screw-top lids or use a small piece of plastic wrap under the cap to create an extra seal. For 2026 travelers, switching to "solid" alternatives—such as cleansing balms, stick sunscreens, and powder exfoliants—is a savvy way to bypass the liquid limits entirely and save space in your liquids bag. If you have expensive serums in glass bottles, wrap them in a sock or bubble wrap and place them in the center of your suitcase to protect against the physical impacts of baggage handling.