ITEM NAME:12 Pieces Stone Natural Basalt Facial Beauty Massage Stone Salon Spa Stones A3R3 12 Pieces Stone Natural Basalt Facial Beauty Massage Stone Salon Spa Stones A3R3 Natural basalt hot stone Professional facial massage Better heat storage capacity Flat and oval Natural stone! Like all natural items, some stones may have lines, holes, color changes or carbon deposits. Make sure the stones are smooth on the customer-facing side to avoid scratching, scratching or scratching the skin/body parts to be treated. They have no sharp or jagged burrs on them. If you close your eyes, you may have more obvious flaws. These are real natural basalt stones and are known for their thermal insulation properties. As a natural basalt stone, you will see some small holes in the surface of the stone when you look closely or under the microscope. (Note that these are small holes, not fillers similar to holes.) Based on customer feedback, we will provide you with some advice on using massage stones. 1. Since the stone is natural, do not use chemicals such as acidic and alkaline cleaners to clean the stone. Rinse with water before using the stone. 2. Hold the stone with your hands during use to prevent the rock from falling from your hand. 3. If possible, use a special container to place the stone when not in use. 4. Enjoy a healthy life. colour:black Size: 4X3X1cm Material:Meteorite Package Contents: 12 * stones