The TSA Liquids Rule and Your Toiletry Bag
If you fly carry-on only in the US, your toiletries have to follow the TSA liquids rule. Packing them right saves time at security and avoids losing a favorite bottle.
The 3-1-1 rule
For carry-on bags at US airports, TSA uses the 3-1-1 rule:
- 3: each container holds 3.4 ounces (100 ml) or less.
- 1: all containers fit in one quart-size, clear, resealable bag.
- 1: one bag per passenger.
The size printed on the container is what counts. A half-empty 6 oz bottle still isn't allowed.
Checked bags don't have this limit. Rules can change and other countries set their own, so check the security agency's website for the airports you're flying from.
What counts as a liquid
More than you might think:
- Shampoo, conditioner, body wash, lotion
- Toothpaste
- Liquid and gel makeup, like foundation and mascara
- Perfume and cologne
- Contact lens solution
- Gels, creams, pastes and sprays
Solid versions, like bar soap, shampoo bars and solid deodorant, don't count as liquids.
How to pack your toiletry bag
- Keep liquids separate. Put all your liquids in the clear quart bag, so you can take it out at security in one go.
- Use your toiletry bag for everything else, like a toothbrush, razor, solid deodorant and cotton pads.
- Pick a bag with a clear window or pocket. The NISHEL toiletry bag has a transparent window for quick checks.
- Pack the liquids bag on top of your carry-on so it's easy to reach.
Exceptions
Medications, baby formula and breast milk are allowed in larger amounts, but you need to tell the officer at screening. Check TSA's website for the current details.
Tips
- Switch to solids where you can. A shampoo bar frees up space.
- Don't overfill travel bottles. Liquids expand in the air.
- Buy toiletries when you land on longer trips.
For five toiletry bags compared, see our travel toiletry bag comparison.