Product Features: With super thin and strong floss, it is the ideal oral care tool to clean teeth and prevent paradentitis and dental caries. Ingredients: Handle: PS, Thread: UHMWPE Storage: Store in a cool and dry place away from direct sunlight or high temperature. How to use: Grip the handle and guide floss between teeth. Use a gentle back and fort, up and down motion along the sides of each tooth to remove food debris and plaque. Caution: Dont force the dental floss between teeth. 2. Dont swallow 3. Keep out of reach of children. 4. Adult supervision is needed for children use.