Brand new, unused item. I'm selling this as I received it recently but have no plans to use it. The box is not included. Please refrain from purchasing if you are concerned about minor scratches, etc., due to home storage. Please note that the item will be shipped without cushioning material. Instant purchase is welcome. Product Description: "Chronic headaches," also known as a modern ailment, and "temporomandibular joint disorder" are on the rise with the times. According to Dr. Akira Usuda, a specialist in temporomandibular joint and orofacial pain, stiffness in the masticatory muscles, such as the temporalis and masseter muscles, is often the cause. Self-massage can improve and prevent these issues. Dr. Usuda wanted to encourage self-healing and preventative actions, and he was contemplating the methods. "As a specialist in temporomandibular joint and orofacial pain, I wanted to recommend self-care for the masticatory muscles in a positive mood during daily skincare routines. I was considering developing an attractive tool that patients would enjoy using during treatment and prevention, and that's when I encountered uka's Kenzan. I thought this would make it easier for my patients to incorporate into their daily care." Following Dr. Usuda's suggestion and sensing the further potential of Kenzan, product development began. The uka relaxation & scalp brush 55, an original acupressure tool co-developed with uka and supervised by Dr. Usuda to relieve muscle stiffness, was born. The product name "55" represents the hardness level. Kenzan has a lineup of four types: soft, medium, regular, and barikata (very hard), allowing users to choose the hardness according to their preference and purpose. This finely adjusted hardness (between regular and medium) was made possible because of uka's commitment to the hardness of Kenzan.