Using the Bio - Therapeutic bt - sonic® Facial Cleansing Brush is easy. First, put 2 AAA batteries in it. Then, apply your favorite facial cleanser or exfoliating product to the brush head. Gently move the brush across your face in circular motions for about 2 minutes. Make sure to cover all areas, especially those hard - to - reach spots that the brush can access. After use, rinse the brush head under running water to clean off the dirt and product residue. Let it dry completely before storing it. Remember, this brush is water - resistant but don't submerge it for long periods. It comes with a 1 - year warranty, so if you have any issues, contact the manufacturer. Also, always follow the instructions that come with the products you use with the brush.