Professional paste for relieving the pains of the knee. Moxibustion has long been used as a natural remedy to relieve pain and reduce joint stiffness. It's self-healing, it can penetrate deeply into the muscle right where it hurts, and the effect can last at least 12 hours. Heat helps stretch the soft tissues, relax muscles, which promotes flexibility and helps to decrease stiffness. Self-heating patch design, you just need to stick it on the painful knee area, easy to use.