Break off about eighteen inches of floss and wind most of it around one of your middle fingers. Wind the remaining floss around the same finger of the opposite hand. This finger will take up the floss as it becomes dirty. Hold the floss tightly between your thumbs and forefingers. Guide the floss between your teeth using a gentle rubbing motion. Never snag the floss into the gums. When the floss reaches the gum line, curve it into a C shape against one tooth. Gently slide it into the space between the gum and the tooth. Hold the floss tightly against the tooth. Gently rub the side of the tooth, moving the floss away from the gum with up and down motions. Repeat this method on the rest of your teeth.*
*Recommendations are provided by the American Dental Association.