Spoon-shaped Terahertz I personally use the spoon. Hard ice and ice melt in an instant. The effects of terahertz are: Improved immunity Cell activation Improved blood circulation, improvement of coldness Fatigue recovery Warming the body from the core, etc. For the eye area, it is said to be effective to gently roll it around. It is also expected to improve blood flow. The size is shown in the photos ^ ^ Natural stone Power stone Eye treatment Purchased at a terahertz specialty store