There are no restrictions as to where you can use the product. You can use it wherever you choose in your body. The part of the body to apply depends on the model that you want to use. When you are making that choice, you must look for those that are designed to suit that purpose. This way, you can feel comfortable when you do that. Moreover, it leads to pain reduction. Some models are made for more sensitive areas. Moreover, if you are allergic to this kind of thing, it is recommended that you choose those you are comfortable with. The fact is that you can apply this to any part of your body, and you can achieve a perfect result after that.