For those who want to gently care for their interdental spaces: Healthy interdental spaces with floss containing propolis. REACH Dental Floss Wax with Propolis, reaches the gingival sulcus. [Instructions for Use] 1. Cut about 40cm of floss and wrap it around one middle finger 2-3 times, and the rest loosely around the other middle finger. 2. Hold the floss taut between your thumbs and index fingers, with about 1-1.5cm of space between them. 3. Gently move the floss back and forth along the tooth surface, inserting it gradually between the teeth. 4. Once the floss passes the contact point between the teeth, insert it slightly into the space between the teeth and gums (gingival sulcus). Even in a healthy mouth, there is a gingival sulcus of about 2-3mm, where plaque tends to accumulate, making it a particularly important care point. 5. After flossing each area, wind the used portion and advance to a clean section. Rinse your mouth after use.