How does Acuplus Headache Relief LI4 Acupressure Point Clip work? The LI4 acupressure point, also known as Hegu, is a well-known pressure point in traditional Chinese medicine for relieving headaches and migraines. It is located between the thumb and index finger and is thought to be connected to the large intestine meridian, which runs through the head, neck, and arms. When pressure is applied to the LI4 point, it stimulates the release of endorphins, the body's natural pain-relieving chemicals. This leads to a reduction in headache pain and discomfort. In addition to the release of endorphins, the pressure applied to the LI4 point can also help improve blood flow and reduce tension in the head and neck muscles. Improved blood flow can help bring oxygen and nutrients to the head, reducing headache pain and promoting healing. The reduction in muscle tension can also help alleviate headaches caused by muscle strain or tension. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.