This formula is designed by a master Chinese Herbalist. Our salve is the most superior pain relieving and healing salve ever to be designed and made available for Therapeutic culture and marketplace. Based on the ancient 'Dit Da Jiao' formula from Shaolin Temple, we've blended the best herbal botanicals from the extensive pharmacopeia of Chinese Herbology. This salve works almost immediately upon contact for moving Qi, and alleviating acute or chronic pain, stiffness, muscle spasm, and inflammation that is better with heat and worse with cold. NOT FOR RHEUMATOID type arthritis.