Precautions: regular coarse roller head. For use on hard skin of the feet only. Dry skin exfoliation brush: for use on the feet and legs. Do not use the device anywhere on the body. Only use for its intended purpose. Keep out of reach of children. Do not use in the same area for more than 3-4 seconds at a time. Stop use immediately if irritation or discomfort occurs. Do not use on broken, sore or irritated skin. Do not submerge the device in water. This product is not suitable for diabetics and those with poor blood circulation. Do not use exfoliation brush if you suffer from a dermatological condition. Keep long hair away from the device when in use.