Due to the new restriction prohibiting all liquids from being brought aboard airplanes in carry-on luggage, we would like to remind you to make necessary arrangements with your Alchemist Essential Oils.  All liquids including essential oils, found in carry-on luggage will be confiscated above 3 oz (30 ml = 1 oz), if not stored in a plastic bag with a Ziplock seal. To avoid problems, we recommend you pack oils in luggage that will be checked-in before flying. Our beautiful black lacquer boxes protect the 4ml size bottles nicely.  I myself travel with 10 x 4ml or so in a zip lock and have no problem at all.  -Marie