Disclosed is a dry electrode that electrically stimulates while contacting skin of a user, the dry electrode including a main body including a conductive body, and a nonconductive cover that surrounds the conductive body such that an area of the conductive body is exposed, and a patch detachably mounted on an area of the main body, in which the conductive body is exposed, one surface of the patch contacting the conductive body and an opposite surface of the patch contacting the skin of the user, the patch being configured to receive a current from the main body to electrically stimulate the skin of the user.