Can You Bring Dry Shampoo On A Plane?

The Quick Answer

Dry shampoo is allowed on planes. But there's a catch that trips people up: most dry shampoo comes in aerosol cans, and aerosols in your carry-on have to follow the TSA's 3-1-1 liquids rule. That means 3.4 ounces (100ml) or less, fitting inside your one quart-sized bag.

If your dry shampoo is a powder formula, you've got more flexibility. Let's break down both options.

Aerosol Dry Shampoo In Carry-On

Most popular dry shampoos — Batiste, Dove, Not Your Mother's, Living Proof — come in aerosol cans. Here's the deal with carry-on:

• Must be 3.4 oz (100ml) or smaller. This is the standard TSA liquids rule, and yes, aerosol toiletries count as liquids.
• Must fit in your quart-sized clear bag along with all your other liquids, gels, creams, and aerosols.
• The can size matters, not how much is left inside. If you have a 5 oz can that's half empty, it's still a 5 oz can. TSA will flag it.

Here's the problem: most standard dry shampoo cans are 4.3 oz, 5 oz, or even 7.3 oz. Those are too big for carry-on. You'll need to buy the travel size specifically.

Travel-Size Options That Actually Work

• Batiste Travel Size: 2.35 oz — fits carry-on rules
• Dove Dry Shampoo Travel: 1.15 oz — fits easily
• Living Proof PhD Travel: 1.8 oz — fits carry-on rules
• Klorane Travel Size: 1.06 oz — fits easily

Buy these before your trip. Airport convenience stores carry travel-sized dry shampoo, but you'll pay a hefty markup.

Powder Dry Shampoo In Carry-On

Powder dry shampoos are the travel-friendly alternative most people don't think about. Here's why they're great for flying:

• Not subject to the 3-1-1 liquids rule. Powder isn't a liquid, gel, or aerosol, so it doesn't need to go in your quart bag.
• No size restriction for domestic flights. You can bring a full-sized container of powder dry shampoo in your carry-on.
• However, there's a powder rule to know about. TSA may ask you to remove powder containers larger than 12 oz (350ml) from your bag for separate screening. Under 12 oz? You're fine — leave it in your bag.

Popular powder dry shampoos include Acure, Bumble and Bumble Prêt-à-Powder, and hair-specific powders like Big Sexy Hair. Some people also use plain cornstarch or arrowroot powder, which works fine and has zero TSA issues.

Dry Shampoo In Checked Bags

Checked bags are much more lenient. Here's what you can pack:

• Aerosol dry shampoo up to 18 oz (500ml) per can. That covers every consumer-sized dry shampoo on the market.
• Total aerosols in checked bags capped at 70 oz (2 liters). Unless you're packing a salon's worth of product, you won't hit this limit.
• The aerosol must have a cap or cover to prevent accidental discharge. Most dry shampoo cans come with one — keep it on.
• Powder dry shampoo has no restrictions in checked bags.

If you can't find a travel-sized aerosol or don't want to sacrifice quart-bag space, just toss your full-sized dry shampoo in your checked luggage.

Why TSA Cares About Aerosols

You might wonder why TSA treats a can of dry shampoo the same as a bottle of shampoo. Two reasons:

Pressurized containers are flammable. Aerosol cans contain propellants (usually butane or propane) that are combustible. In the pressurized cabin of an aircraft, a leaking or damaged aerosol can is a legitimate fire risk. That's why there are size limits and why caps need to stay on in checked bags.

Consistency in screening. It's faster and more reliable for TSA to apply one rule to all liquids, gels, aerosols, and creams than to make agents identify specific products. Your dry shampoo is harmless, but it looks exactly like many other aerosol products on an X-ray.

Pro Tips For Flying With Dry Shampoo

• Apply before you go through security. If you're worried about space in your quart bag, just use your dry shampoo at home or in the airport bathroom before the checkpoint. You won't need it again until your destination.
• Switch to powder for trips. A small bottle of powder dry shampoo takes up less space, doesn't count toward your liquids, and lasts just as long. It's the superior travel format.
• Decant into a small container. If you're committed to your brand but can't find a travel size, buy an empty refillable aerosol bottle — though be aware these can be tricky with dry shampoo specifically since it needs pressure to spray properly. Powder decanting into a small shaker bottle works much better.
• Don't forget altitude effects. Aerosol cans can leak slightly at high altitude due to pressure changes. Keep the cap on and pack it in a plastic bag inside your checked luggage just in case.

International Flights

Most international airlines and airports follow similar rules to the TSA for liquids and aerosols:

• The 100ml limit is standard worldwide for carry-on liquids and aerosols. (It's actually the origin of the TSA's 3.4 oz rule — 3.4 oz equals 100ml.)
• If you buy dry shampoo in a duty-free shop after security, you can bring a larger size on board, as long as it stays in the sealed duty-free bag with the receipt visible.
• Some countries are stricter about powders. Australia, for example, has additional screening requirements for powders over 350ml on international flights. Check before you fly.

Alternatives To Pack Instead

If the aerosol size limits are annoying, consider these alternatives that work just as well and travel easier:

• Powder dry shampoo — no liquid restrictions
• Dry shampoo sheets — paper-thin sheets you rub on your roots, completely TSA-proof, no size limits
• Cornstarch or arrowroot powder — the DIY option, works great on light hair
• Cocoa powder mixed with cornstarch — the DIY option for dark hair
• Blotting papers — originally for face oil, but they work on hairline oil in a pinch