Nu Skin SPA machine has the effect of slimming and beautifying the body. For use only by people with healthy skin. If you have an ulcer or wound on your skin, use it after your skin has healed. If your skin is prone to allergies or you have been allergic to metal, you can try it on the inside of your arm or behind your ear before judging whether it can be used. If you are pregnant, have epilepsy, have a pacemaker or similar device, wear metal dental braces, have metal implants in your body, or have a disease, please consult your physician before use.