3) Take some of the mixture on an old clean toothbrush and gently apply it to the heated part of your device. Leave it to work for 15 minutes.
4) With your fingers, scrub the ceramic parts of the device (your fingers won’t cause any scratches). For a curling iron or any metal parts, you can use the toothbrush to scrub them.
5) Wipe the device with a clean microfibre cloth.