Cleaner Bar and Nylon Brush Set Removes dry dirt and dust. CARE INSTRUCTIONS STEP1: Test a small amount on an inconspicuous area before using the entire product. STEP2: Use the brush to remove dry dirt such as dust and dust. STEP3: Stubborn dirt and stains gently rub the cleaner bar into the dirty area. Please be aware that if you rub it hardly, the color itself will fall off. STEP4: Use the brush to brush and remove the stains. STEP5: Brush the entire brush again and let the bristles stand up.