These 3 products combined create differnt levels of lasting pain relief. Evil Bone Water is a fast acting spray that provides a jumpstart for relief. The AoYi patches target specific areas and be applied and reused for for up towards 30 hours.  Corydalis relieve salve provides its own soothing relief for 2-8 hours.  When Corydalis Salve is layered with Evil Bone Water or applied to AoYi patch, the herbs cooperate together to increase the endurance and efficacy of their pain relieving properties.  
(Video on Application to be posted soon)