Unwind approx 15inches of floss. Wind most of the floss around both of your middle fingers, leaving only about 1 to 2 inches of floss for your teeth. Hold the floss taut with your thumbs and index fingers. Slide the floss gently between the gum and the tooth. The floss should be held firmly against the tooth and rub along the surface of the tooth with a gentle up and down movement and into a C shape under the gum. Follow this process for the remaining teeth.

Hydrogen Peroxide.