A breath of calmness in your busy life. A daily ritual, an act of self care. The Black Obsidian facial roller is a Chinese skincare tool that has been used for thousands of years. Perfected throughout the centuries, this facial massager was built to have a soothing effect on the skin. Unlike the other stones, Black Obsidian naturally retains warmth and is great to use on congested, blemish prone skin. The warmth of the obsidian encourages stimulation of the lymphatic system and circulation. To warm our Black Obsidian tools, we recommend placing them in a glass of warm water.