A converter is a device used to alter an electric current, such as AC to DC or vice versa.  An adapter is a device used to allow two incompatible devices to connect. This device will allow you to plug in your tool without changing its electrical current.  To be sure your hair styling tools function properly, it's important that the voltage and plug type are compatible with your region. Most ISO Beauty hair styling tools are dual voltage, at 110V-240V, which makes them ideal for travel. You may need an adapter with ISO Beauty hair styling tools depending on your region. Dual Voltage: Hair Styling Tools and Sets The dual voltage feature is not available on all styling tools from ISO Beauty. All twisters and straighteners are dual voltage tools when sold separately. ISO Beauty hair dryers are at a consistent 125V, distinguishing them as singular voltage tools. However, our Travel mini hair dryers that are dual voltage. Although many tools are available with dual voltage, most products are only available with one of the following plug types: A (U.S.)C (EU)