Hello everyone! I know any metal implants in the body is a major contraindication when using Electricity during a facial. I have a client who has a knee implant. This client could benefit from the use of High Frequency and Galvanic current for treating acne. So my question is, Would it be okay to use electricity since the metal implant is in the knee and not close to the area I would be working on? Any comments or thoughts would be appreciated.