For carry-on baggage
, only bring personal, medicinal, and toilet items. Examples include hairspray, deodorant spray, asthma inhalers, mosquito repellent, and shaving cream. Personal, medicinal, and toilet items may use a flammable propellant and still be permitted on-board (subject to TSA security rules.)
For checked baggage
, you may travel with personal, medicinal, and toilet aerosols, plus
other non-flammable aerosols. Examples may include:
Some manufacturers use flammable propellants in these products. Check the can. If you see the words flammable, inflammable, propane, butane, isopropane, or petroleum distillates, then it's a flammable aerosol and not allowed in checked baggage..
Travel with the cap on
your aerosol can, whether it is in checked or carry-on baggage
Some cans have a release button recessed into their tops, or other protection for the release device - these are also safe.
Always obey the quantity limits for aerosols. You can see the quantity limits for aerosols here