Relief knee patches use plant extracts wormwood and ginger without any side effects. They are safe, natural, and can help provide the needed pain relief. Wormwood has a warm nature and is a purely positive plant. Used in moxibustion, it can detoxify and nourish the skin, consolidate the body, effectively relieve neuralgia, low back pain, shoulder pain, drive away cold and dampness, and improve human immunity. A veritable "medical herb". 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. Its 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.