* Voltage difference: The US runs on 120 volts, while the UK uses 230-240 volts. Plugging a UK hairdryer into a US outlet will likely damage it.
* Plug type: The UK uses a three-pin plug, while the US uses a two-prong plug with a grounding pin.
What you need:
* Voltage converter: This transforms the US voltage to the UK voltage needed by your hairdryer.
* Plug adapter: This lets you physically plug your UK hairdryer into a US outlet.
Important Note: Using a voltage converter alone is not enough. It's crucial to use both a voltage converter and a plug adapter for safe and proper operation.
It's generally more cost-effective to buy a hairdryer designed for the US voltage and plug type. However, if you're only traveling for a short period, the adapter and converter solution can work.