You can even use it without heating of any kind as it has natural far infrared.
The Bianstone face / body roller can be heated by by exposing it to sunlight; or cooled using cold water. After being heated or cooled, it can be applied for scraping on the head or face or neck to improve your skin complexion.
Scientific Research shows that sibin bianstone has the power to remove excess toxins from our body....
"Stimulating the body's acupressure points with Sibin Bianstone is as good or even better than acupuncture..."
Bianstone Face Body Roller