Our deep cleaning foot patches contain liquid paraffin and microcrystalline wax. It helps with sleep quality and relieves relaxation of the body and mind. Its usage is simple: Instructions: 1. Clean your feet before use and dry them with a towel. 2. Remove the backing paper of the tape. 3. Stick the foot pad onto the tape. 4. Stick it in the center of the shoe sole. 5. Stay for 6 to 8 hours (preferably overnight). 6. Gently remove and wash with soapy water. After use, the sleep quality is very high, the rest is sufficient, and the spirit is abundant.