Replacement Floss
The boss of all floss
Select the refill designed for your case.
Each refill is precision-made to fit its matching dispenser for a seamless, tangle-free experience.
Pack options:
For the Expanding Floss Case. Compact, powerful, and ready to keep you flossing for another month.
Refill plan: $5.00 replacement floss bobbin every 4 weeks, cancel anytime
Watch it, shop it
See what people think and shop the faves.
Co-created with 1000s of hygienists & dentists
"I love the BURST floss for its color! The black helps my patients see the plaque removal and the expanding technology has more surface area to grab bacteria."
- Kim F., RDH & BURST Ambassador
Less gunk = better breath
Clinically tested and shown to remove up to 85% of plaque on surfaces toothbrushes can't reach and 2x more plaque than a regular unwaxed dental floss.*
*In laboratory tests. Data on file. Download at burstoralcare.com/clinical.
See the results
Get the instant satisfaction of seeing exactly what's been lurking between your teeth, motivating you to keep on flossing!
Refillable case for less waste
Reduce and reuse with our lightweight, compact, 95% recycled plastic case and 32-yard replacement bobbins.
Curious what people think?
Our BURST Ambassador Dental Professionals and customers know their stuff. You should listen to them.
Marisa P.
"If you didn't like flossing before, you're going to love it now. The feeling of being able to see the nasty that you removed from this black floss is just so satisfying. Never thought I'll be so excited to floss. Best stocking stuffer to put in every Christmas bag this season. Just reviewing this floss just made me want to eat and floss again."
Nicole K.
"Hands down (or fingers up) my favorite floss! I love that it is black and I can see all the little nasties coming out of my teeth and gums. I love that it is helping remove the stains from my teeth due to my coffee addiction. And it tastes AMAZing!"
Jenee C.
"BURST floss is my favorite to date and I'll tell you why. The black color makes it so easy to SEE your progress!!! The aroma is fantastic with essential oils to help with gum health! It's fine enough to reach all those hard to get to places also!!!"
Got questions?
More questions?
Find answers on our FAQs page.
How is the BURST floss different from other floss?
How is the BURST floss different from other floss?
Unlike traditional options, BURST Floss has been meticulously designed to remove up to 85% of plaque from areas that regular toothbrushes can't reach and 2x more plaque than unwaxed dental floss. So, get ready for a thorough clean! Its uniquely black color not only provides immediate, gunk-ridding satisfaction by highlighting debris removed from between your teeth but also boasts a high-quality textured thread with adsorptive xylitol coating that effectively pulls away stubborn stains and aids in fighting cavities. Additionally, our floss is mindfully made, being cruelty-free and vegan, with a natural Mint Eucalyptus aroma and free from parabens, BPA, or PFAS. To top it off, it is housed in an eco-friendly 95% recycled plastic case, reflecting our commitment to sustainability. Boom!
Our floss stands out in the market due to its unique features and careful creation process. Developed in collaboration with a community of over 40,000 dental professionals, the Expanding Floss is the result of extensive testing and consultation with this enthusiastic team, setting it apart from all other dental floss options on the market. We actively sought the input of these experts, valuing their insights to create a product that truly caters to your oral health needs.
Why does the BURST floss expand and how?
Why does the BURST floss expand and how?
The BURST Floss is made with technology that reacts to the saliva and friction in your mouth, which then causes the filament to expand. The expansion of the filament will reach into the nooks and crannies in your teeth to get rid of your plaque.
Does BURST floss shred?
Does BURST floss shred?
Nope! It boasts a high-quality textured thread with an adsorptive xylitol coating that effectively pulls away stubborn stains and aids in fighting cavities. Strong and protective, sign me up!
Why is BURST floss black?
Why is BURST floss black?
The BURST Floss is uniquely black for a purpose – it instills value for flossing by providing immediate satisfaction through its distinctive color. The black hue highlights the debris removed from between your teeth, giving you a visual representation of the effectiveness of your flossing. This not only motivates you to keep flossing but also addresses the common issue where individuals might not floss as often if they can't see tangible results.
Additionally, BURST Expanding Floss is designed to cater to various dental needs. If you've ever been advised to manipulate floss, such as knotting it, doubling it, using tape, or employing super floss, BURST Floss handles all of those scenarios. It’s kinda like a floss-spouting superhero! Better yet, its versatility makes it great for open contacts, light contacts, wide embrasures, implants, and even food traps. In essence, this is the one floss that does it all, making your flossing routine simpler, more effective, and visually rewarding.
Why are you removing charcoal from your brush heads and floss bobbins?
Why are you removing charcoal from your brush heads and floss bobbins?
We thought long and hard about this and want to share the reasoning behind this choice with you. While we still believe in the benefits of charcoal for oral hygiene, we also value the feedback and preferences of our dental professionals and customers.



