Yep, you can use the FATYER 2000W International Travel Voltage Converter with hair straighteners.

From what the manufacturer says, it can handle devices within the range of 26W to 880W, so most hair straighteners should work just fine. Just make sure your straightener falls within that range.

If you're using something more powerful, check if it's dual voltage compatible. Also, this converter supports dual voltage devices up to 2000W, which is useful for things like certain high-power hair dryers in 240V adapter mode.

Safety-wise, it’s got all the necessary certifications like FCC, CE, and RoHS, and features like overvoltage, overcurrent, short circuit, and overheating protection.

It also has automatic shutdown and advanced cooling technology to keep things running smoothly and quietly.

It's also pretty travel-friendly with a zipper pouch and spare fuses. Plus, it works with plug types from the US, AUS, UK, and EU, so you won't need multiple adapters.

According to our research, people generally find it effective and convenient. The dual USB ports for charging multiple devices and the compact design are well-liked features.

Some mention that the Australian plug can be tricky to insert into tight outlets, but overall feedback is positive.

So yeah, if you need a reliable travel converter for your hair straightener and other gadgets, the FATYER 2000W is a good bet.