Can You Pack Hairspray in a Carry-On Bag?

Carry-on aerosols must be 3.4 oz or less; checked bags allow larger toiletry cans within limits.

Published October 30, 2026 · 3 min read · Topic: Travel & Airline Rules · Travel rules

Typical situation

You use a full-size can of hairspray and deodorant and want to know whether you can pack them in a carry-on or a checked bag.

Main answer · berabags Editorial Team · Rules view

For a carry-on, each aerosol must be 3.4 oz (100 ml) or less and fit in your quart-size bag. For a checked bag, the FAA allows toiletry aerosols if each can is no more than 18 oz (500 ml) and the total is no more than 70 oz (2 kg).

Carry-on rule

Aerosols such as hairspray, dry shampoo and deodorant sprays follow TSA’s 3-1-1 rule. A container larger than 3.4 oz is not allowed in the cabin, even if it is nearly empty. See our answer on carry-on liquids for how to pack the quart-size bag.

Checked-bag rule

The FAA’s PackSafe guidance allows personal care and toiletry aerosols in checked bags with limits:

Each container no more than 18 oz (500 ml).
A total of no more than 70 oz (2 kg) of toiletries.
The nozzle or release button must be protected by a cap or other means, so it cannot be pressed by accident.

How to pack

Put the cap on each can and tape it if the cap is loose.
Put cans in a sealed plastic bag.
Place them in the middle of the bag, padded with clothes, away from the edge.
Keep them away from heat before you pack.

Why aerosols are limited

Aerosol cans are pressurised and contain propellant that can be flammable. A can that is crushed, overheated or damaged can burst or release its contents inside a bag. The limits and the cap rule are there to reduce that risk, which is why a loose, uncapped can in a suitcase is the thing to avoid. If a can looks dented or is leaking, do not pack it.

Where this answer stops

These limits cover personal toiletries and medicinal items. They do not cover other aerosols such as paint, lighter fuel or flammable sprays, which are dangerous goods. Airlines can be stricter, and rules in other countries differ.

Sources and further reading

Three more perspectives

berabags Editorial Team · Selection view

A bag with a separate wash-bag compartment is best for aerosols. A zip-top pouch with a wipe-clean lining keeps any leak from reaching the rest of the contents.

berabags Editorial Team · Maintenance view

Aerosol cans can leak or spray in a bag, and the contents can stain fabric and leather. Cover each nozzle with its cap, put the cans in a sealed bag, and check the bag lining for sticky residue after a flight.

berabags Editorial Team · Purchasing view

If you travel often, consider a pump spray or a small travel can. Travel-size products cost a little more per millilitre, but they avoid the need to check a bag only for hairspray.

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