TSA Rules · Updated October 4, 2026
Can You Bring Shampoo on a Plane?
Yes, at 3.4oz in the cabin. Liquid shampoo obeys the 3-1-1 rule, full-size bottles ride in checked, and shampoo bars skip the whole thing as solids.
The rules
Carry-on essentials
Move through the airport fast and keep everything in its place from gate to gate.
Every shampoo, one look
| Shampoo form | Carry-on | Checked | The rule |
|---|---|---|---|
| Travel bottle (3.4oz or less) | Yes | Yes | Fits the quart bag |
| Full-size bottle | No | Yes | Over 3.4oz; pack it in checked, bagged |
| Shampoo bar | Yes | Yes | Solid; exempt from the liquids rule entirely |
| Dry shampoo aerosol | 3.4oz | Yes | Aerosol; cap the nozzle for checked bags |
The official word
Straight from TSA
“You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes … 3.4 ounces (100 milliliters) or less per item.”
TSA Liquids Rule · verified July 2026
Before the checkpoint
Three calls that matter
A shampoo bar is a solid, so it never counts against your quart bag and cannot leak at altitude.
Cabin pressure changes push liquid out of part-full bottles. Bag your shampoo even in checked luggage.
For a two-night trip, the bottle in the shower usually beats burning quart-bag space.
FAQ
Quick answers
Can you bring shampoo on a plane?
Can full-size shampoo go in checked luggage?
Are shampoo bars allowed in carry-on?
Does dry shampoo count as a liquid?
Sources: TSA: the liquids rule · TSA: What Can I Bring · Reviewed July 2026