Detoxification in beauty salons is generally divided into two types: 1. When ultrasonic waves are used to introduce the detoxification cream, the white detoxification cream will turn gray or black. No matter how well the beauty salon says, this kind of detoxification is best not to be done. I don't know if there are any side effects, at least it's bad for the skin, because it will change color even if the ultrasound is not turned on. 2. Use detoxification essential oil for lymphatic drainage and detoxification. It has no side effects on human body, and can also promote blood circulation and lymphatic circulation. But the price will be much higher than the last one.