Whitening floss is one the many options now available to you when choosing a dental floss.
This is because floss brands are looking to capitalize on the increasing popularity of tooth-whitening products, which also include whitening toothpastes and whitening mouthwash.
Whitening floss doesn't actually bleach the teeth. Instead, it makes your teeth look whiter by doing a better job of removing the particles between them, similar to the way that vacuuming or dusting rugs or furniture doesn't actually change their color, but the colors look brighter when you remove the dust and dirt.
Some types of whitening floss are coated with microscopic abrasive silica particles. Others are treated with compounds such as calcium peroxide that can help dissolve some of the excess proteins that saliva deposits on the teeth that can cause discoloration. But the main way that floss improves the appearance of the teeth is by removing food particles and bacterial plaque to keep your gums healthy. Your teeth will look brighter and healthier if you maintain healthy gums, which you can do by flossing daily with whitening floss or any other type of floss that you like.
Keep in mind that whitening floss, whitening mouthwash, and whitening toothpaste can only provide modest changes in tooth color. If you have severely stained teeth, tooth-colored crowns, or implants, you may require special attention to make them whiter. In that case, talk to your dentist.