Travel & Dual Voltage
Hair Tools and Carry-On Rules: What Flies
Three categories of hair tool and three completely different sets of rules, only one of which most travelers have heard of.
Updated September 2026 · Sawyer V.
Corded hair dryers, flat irons and curling irons are not restricted. Gas or butane cordless curling irons are limited to one per person in carry-on only, with no spare cartridges. Battery tools follow lithium rules — spares must be in the cabin and capped at 100 watt-hours.
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Corded tools: no restriction
The simplest case and the one most people are worried about. The FAA states plainly, in its PackSafe entry for cordless curling irons, that electric curling irons and hair straighteners, which plug into an electric outlet, are not restricted — FAA PackSafe.
That covers almost everything in our registry: every dryer, both ghd irons, the T3 SinglePass irons, the curling irons and the blow-dry brushes. Carry-on or checked, your choice.
The practical advice is still to carry them on, for a reason that has nothing to do with rules: a flat iron in a checked bag is a heavy object in a bag that gets thrown, and hinges and plate alignment do not enjoy that.
Butane and gas cordless irons: one per person, cabin only
A separate category with genuinely restrictive rules, and one people often do not realize applies to them. The FAA entry covers cordless curling irons containing a gas cartridge and butane-fueled curling irons, and states:
- One per person, in carry-on baggage only. Not in the hold, and not two.
- Gas refills — spare cartridges — are not permitted at all, in either cabin or checked baggage.
Nothing in our registry is butane-powered, so this does not affect any tool we cover. It is on this page because these irons are sold widely as travel tools, which is exactly the context in which the restriction bites.
Battery tools: the lithium rules
This is where it gets specific, and it applies directly to one tool we cover — the Dyson Corrale, which is cordless with a published 10.8–16.8 V cell.
The FAA’s position on lithium batteries distinguishes sharply between batteries installed in a device and spare batteries carried separately — FAA PackSafe.
The published lithium battery rules that affect hair tools
| Situation | Rule |
|---|---|
| Spare, uninstalled lithium-ion batteries and power banks | Carry-on baggage only |
| Carry-on bag checked at the gate or planeside | All spare batteries and power banks must be removed and kept with you in the cabin |
| Size limit, lithium-ion | 100 watt-hours per battery; 101–160 Wh needs airline approval, maximum two spares |
| Size limit, lithium metal | 2 grams of lithium content per battery |
| Battery terminals | Must be protected from short circuit — tape, retail packaging, a case or a pouch |
| Damaged or recalled batteries | Must not be carried aboard at all, cabin or hold |
For a cordless iron with a fixed internal battery, the rule that actually applies is the installed-battery one. But the sensible reading of the whole set is to keep the tool in the cabin regardless: it is simpler, it is what you would be required to do with a spare, and it avoids the gate-check scenario where you would have to dismantle your bag on a jet bridge.
The FAA also notes that many airlines apply stricter limits than the federal minimum, so if you are carrying more than one battery device, check the carrier.
The travel pouch is not a formality
Dyson publishes a travel pouch in the Corrale box, and it is the only iron in our registry that ships one. Given the terminals-protected requirement and the general question of putting a recently-hot metal object into a bag, that is a more useful inclusion than it first looks.
For corded tools, the equivalent sense is to let the plates cool completely before packing. Nothing in the rules requires it. Melted nylon lining does not care about the rules.
Liquids, which are the actual problem
The tool is rarely what stops you at security. The heat protectant is. Sprays, serums and oils are liquids, and they are subject to the same cabin restrictions as everything else in a wash bag.
Since heat protectant is the one product with a genuine mechanical function in this whole subject — see what it does and does not do — it is worth planning for rather than replacing at the destination with whatever the hotel shop has.
What we would pack
- The tool in the cabin, always, corded or not. Rules aside, it is the fragile expensive thing.
- Dual voltage or nothing. The rules let you carry a 120 V dryer to London; physics stops you using it — the UK page has the numbers.
- A plug adapter, not a converter. Reasoning on the adapter page.
- Protectant in a cabin-legal size, or checked.
- Nothing butane. One per person, cabin only, no refills — and there is a corded or battery alternative for every job it does.
Price per use, at 5 uses a week over 5 years
| What you pay | Cost per use | Cost per year |
|---|---|---|
| $30 | $0.02 | $6.00 |
| $60 | $0.05 | $12.00 |
| $100 | $0.08 | $20.00 |
| $150 | $0.12 | $30.00 |
| $200 | $0.15 | $40.00 |
| $300 | $0.23 | $60.00 |
| $400 | $0.31 | $80.00 |
| $500 | $0.38 | $100.00 |
5 uses a week for 5 years is 1300 uses. Both figures are stated assumptions, not measurements — halve the life and every cost per use doubles. We publish the ladder rather than a worked example for one specific product because a price we typed into a sentence would be wrong within a week.
The tools on this page
Prices come from the live price layer. Where none is available the button says so rather than showing a number we cannot stand behind.
ghd flight+ travel hair dryer
The only dual-voltage dryer in this registry, at a published 0.99 lb with the cord on — the one dryer that genuinely travels.
T3 SinglePass StyleMax 1 inch flat iron
Nine heat settings and genuine 100–240 V dual voltage: the most adjustable iron here and the only one you can pack for Europe without a thought.
Dyson Corrale straightener
Cordless, and the only iron here whose plates flex. The 200 W figure is a battery rating and is not comparable to a corded iron's draw.
Questions people actually ask
Can you take a hair straightener in hand luggage?
Yes. The FAA states that electric curling irons and hair straighteners which plug into an outlet are not restricted, so they can go in either carry-on or checked baggage.
Can you take a cordless curling iron on a plane?
A butane or gas-cartridge one is limited to one per person in carry-on baggage only, and spare gas cartridges are not permitted at all. A battery-powered one follows the lithium battery rules instead.
Can you take a Dyson Corrale on a plane?
Yes. Lithium batteries installed in a device are permitted; spare uninstalled batteries must be in the cabin and are capped at 100 watt-hours each. Keep the iron with you rather than in the hold.
Does a hair dryer count toward my liquids allowance?
No, it is not a liquid. The heat protectant, serum or oil you use with it is, and that is what usually causes the problem at security.