Carry-on liquids · Airport security · 2026 guide
TSA Liquid Rules 2026: A Practical Carry-On Guide
Packing liquids is easier when you separate three questions: how large each container can be, which products count as liquids, and what your departure airport requires.
Quick Answer
For ordinary toiletries at US TSA checkpoints, use containers of 3.4 fl oz (100 ml) or less, packed together in one clear quart-size resealable bag per passenger. Different procedures apply to some medical and child-feeding items. Check every airport where you will pass through security.
What does the 3-1-1 rule mean?
The numbers describe the standard TSA liquids setup: the permitted container size, one quart-size bag and one bag for each passenger. The bag should close with the containers inside. You cannot add a second ordinary liquids bag simply because you also carry a personal item.
There is no universal bottle count. Bottle shape and the other items in the bag determine what fits. See the official TSA travel tips.
Pack the bag where you can reach it without unpacking your suitcase. Follow the instructions given at the checkpoint about taking it out for screening.
Which toiletries need attention?
| Product | Packing consideration |
|---|---|
| Shampoo, liquid soap and body wash | Use your permitted liquids setup |
| Creams, gels, lotions and toothpaste | Do not treat thicker texture as an exemption |
| Solid bar soap | A solid alternative to liquid soap |
| Aerosol toiletries | Check the specific item; additional restrictions can apply |
Check unusual items in the TSA item directory. A product's everyday name does not always describe the form you are carrying.
Container size is different from the amount left
A nearly empty full-size bottle is a poor choice for a small-container rule. Use a correctly sized container instead of expecting staff to estimate the amount remaining.
For an organised kit, choose readable capacity markings, label the contents and check that the complete set fits before travel day. Put anything you need to identify or explain somewhere accessible.
CarryPeace has four separate removable bottles of approximately 30 ml each. If asked, be ready to show the individual bottles. Its outer case does not replace the required liquids bag or guarantee acceptance at every checkpoint.
Medical items and child-feeding supplies
Medically necessary liquids and certain baby or toddler feeding supplies can qualify for exceptions and additional screening. Check the relevant official instructions before packing; do not apply an exception for one item to the rest of your toiletries.
TSA explains the medical provisions in its travel tips and child-feeding provisions in its item directory. Keep these items accessible and tell the officer about them as directed.
US, UK and European connections
TSA rules describe US screening. Your return flight or connection may involve a different authority.
- UK: rules depend on the airport. GOV.UK says most airports use a 100 ml container limit, while some allow containers up to 2 litres. Separate-bag requirements also vary. Check departure, transfer and return airports using the UK liquids guidance.
- EU: the European Commission's general passenger guidance describes containers up to 100 ml in a transparent resealable bag up to one litre. Check your airport's current instructions as well. See the EU passenger guidance.
Do not assume newer scanners mean the same rules everywhere. Pack for the strictest confirmed requirement on your route.
FAQ
Does each bottle need its own bag?
No. Ordinary TSA liquids share the passenger's single quart-size bag. Check the fit with all your toiletries together.
Can I use refillable bottles?
Choose correctly sized, clearly identifiable containers and follow screening instructions. For practical options, see our travel bottle guide.
Can I rely on “TSA-approved” packaging?
Use the actual container size, contents and screening requirements to make your decision. Marketing wording does not override the checkpoint's assessment.
What should I check the night before?
Confirm airport guidance, close and label your bottles, test the liquids-bag fit and place it within reach. Use our carry-on toiletry packing guide for the full sequence.
Rules reviewed on September 25, 2026. Follow current official guidance and instructions at your checkpoint.