To keep your ghd duet style running smoothly, it's important to regularly clean the rear filter. Before using the product, take a moment to inspect it, and clean the filter if it looks dirty, following the guidance in the instruction manual. Make sure to unplug it from the mains and allow it to cool down first. You can wipe the outside of the ghd duet style with a damp cloth, but please avoid using sharp or abrasive cleaners, as well as corrosive products. Remember, never immerse the appliance in water. Lastly, gently remove any dust and hair from the rear filter with a soft brush.