Alaxi Aivo is designed for the back and base of the neck only — where the muscle is thickest. Do not use on the front or sides of your neck or directly over the base of the skull. These areas sit close to major blood vessels and applying pressure there carries serious risk. Always keep it on the back of your neck, moving gently across the muscle. Never at the front, sides or directly over bone. If you have a history of blood clots, vascular conditions or are pregnant, check with a doctor before use.