The brands of dental floss that I know of are: Fawn Mom, Dental Beauty, Kangaroo Mom, Watson's, Saffia, and Pengshu. Of course, the distinction between different brands is still relatively large, such as: whether or not wax, whether or not expansion, whether or not there is a flavor, etc., to see what kind of personal needs of the product on which to choose. Appropriate use of dental floss is conducive to dental health, but do not overuse and harm the gums.
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