Is the BURST Floss waxed? October 22, 2021 20:01 Updated Yes, The BURST Floss uses Microcrystalline wax, there are No PFAs. Related articles How long is the BURST Floss Refill and how long should it last? Why does the BURST Floss get stuck in my teeth sometimes? Why does the BURST Floss expand and how? Can I buy another BURST Floss case by itself? What does the BURST Floss Juniper Berry flavour taste like?