Does a universal plug adaptor make a 120-volt styling tool suitable for a London hotel?

Lara turns the styling tool over. The label says 120 V. Her friend points to the adaptor in her bag: “That one says universal.”

Lara bought the tool in the United States and has brought it on a London weekend. She has not established whether it supports another voltage or what the manufacturer permits. The adaptor's description concerns plug shapes; it is not identified as a voltage converter. Nothing has been plugged in.

[Electrical Safety First explains that a travel adaptor does not convert voltage or frequency](https://www.electricalsafetyfirst.org.uk/safety-advice/travel-advice/united-states/). A plug that fits is not confirmation that this combination is suitable. Lara should leave the tool unplugged until compatibility and the manufacturer's requirements are established.

They are getting ready for an evening out. Her friend wants to try it for a moment; Lara would rather ask about a suitable alternative. How can they settle tonight's plan without turning an unfamiliar electrical setup into an experiment?