An adapter changes the shape of the plug pins and nothing else; a converter changes the voltage. Six tools on this site are 120 V only and need the second one abroad; nine are dual voltage and need neither.
This is the confusion that destroys tools, and it destroys them in one direction more often than the other.
A plug adapter is a passive shell. It lets an American plug fit a European or British socket and does nothing whatever to the electricity. Plug a 120 V tool into 230 V through an adapter and it receives 230 V.
A converter transforms the voltage. It is heavier, it has a wattage rating, and it is what a single-voltage tool requires outside its own grid. US line voltage is 120 V nominal, not 110 — the figure you will see on American listings is usually written 110 or 110–120, and it is the same supply.
Which of yours is which
Six products here state that they are North America only, and they say it plainly:
- the TQCIR styling set at $140 — “110 V US only”, and its listing explicitly prohibits use on 220–240 V
- the 7MAGIC air styler at $110 — US outlets only, and it warns against incompatible converters too
- the AVENHO at $56, which puts “110–120 V only” in the product name
- the AVENHO Hot at $50, which states 110 V twice
- the Remington Shine Therapy straightener at $34 — US and Canada, 110 V only
- the ConairMAN triple waver at $25 — single voltage
Nine state dual voltage and will run anywhere with just an adapter: four straighteners at 110–240 V (the two Arkams at $21 and $29, the FEBOTE at $26, the XIKEZAN at $22), the CHI at $44, the Hot Tools brush at $68, the SHEGLAM at $43, and both Remington curling tools.
Two publish nothing: the REVLON straightener at $14 and the Wild Willies at $30. On those, the figure is on the tool.
One trap in the numbers
120–240 V is not the same as 100–240 V. The Remington CI41MS5 states 120–240; the replacement chargers state 100–240. Japan runs at 100 V, so the first will not work there and the second will. One digit, two different answers.
And the wattage trap
A converter is rated in watts, and a hair dryer draws 1500 to 2400 of them. Most travel converters sold for phone chargers will not carry a dryer, which is why a dual-voltage dryer or a dryer at the destination is the usual answer rather than a converter.
Check the tool, not the adapter. The figure that decides it is printed on the body, and this is one of the few specifications where getting it wrong is immediately expensive. Reading the full label takes ten seconds.
Check your own manual before you follow anything here. Temperatures, water ratings and supply voltages differ from model to model, and the maker’s own figures take precedence over anything written on this site. A supply of the wrong voltage is a failure rather than a slow charge, and the figure is printed on the tool — not inferred from a connector that happens to fit.
Prices quoted in this text were read on October 10, 2026. The live price is at the top of the page.
Last reviewed October 10, 2026