Why Your Gums Bleed When You Floss (And When to Worry)

Bleeding is the most common reason people stop flossing. Usually that is exactly backwards.

The normal case

If you have not flossed in a while, the gums are inflamed. They bleed because the tissue is swollen, not because floss is sharp. That typically settles within one to two weeks of daily cleaning.

When it is not normal

See a dentist if bleeding:

• Continues daily past two weeks.
• Happens without flossing or brushing.
• Comes with pain, swelling, or a bad taste.
• Happens in only one spot repeatedly.

Technique beats force

Snap the floss gently past the contact instead of forcing it down. Wrap into a C shape around each tooth and wipe up and down, including just under the gumline.

Bleeding less? You are doing it right.