Our Body Ionic Brush is made of ultra fine bristles of horsehair and copper wire, which form negative ions through friction. These ions are immediately absorbed directly into your skin, protecting your body from free radicals and giving it numerous health benefits. Dry brushing detoxifies the body, exfoliates the skin, improves circulation, improves skin tone, aids digestion, and increases energy and well-being. For dry use only. Please do not use this brush if you are allergic to copper or metals.