Brand new, unopened product. Product Name: Retainer Floss Quantity: 50 pieces (1 box) Manufacturer: Anno Pharmaceutical 【Retainer (Retention Appliance) Dedicated Floss】 After orthodontic treatment, while wearing a retainer (retention appliance), do you find it difficult to thoroughly clean the gaps between the retainer and your teeth and gums, where dirt easily accumulates? Insufficient cleaning of these gaps can negatively impact the orthodontic results and the surrounding teeth and gums. Anno Pharmaceutical, a top manufacturer of orthodontic floss, developed this retainer-specific floss based on customer feedback. By hardening the tip, it smoothly enters narrow gaps that are difficult to pass with regular floss, allowing for thorough cleaning of the spaces between teeth and deep into the gums. 【For Fixed (Non-Removable) Retainers】 There are two types of retainers: removable and non-removable. Non-removable, fixed retainers often cannot be cleaned effectively with regular toothbrushes or floss, leaving behind dirt. This product was developed by developers who were dissatisfied with the dental care of fixed retainers, for those who share the same concerns. 【Safety】 Safety verification is essential for anything placed in the mouth. This retainer-specific floss has undergone analysis and testing by the "BOKEN Quality Evaluation Institute," a third-party inspection organization in Japan, and has been certified as "compliant" after conducting tests in accordance with the Food Sanitation Law (Standards for Food, Additives, etc.). Therefore, anyone can use it with peace of mind. 【Developed by a Japanese Company】 This product was developed by a Japanese company, ensuring safe use. Please use it with confidence for your daily oral care.