Expanding Floss

Rated 4.8 out of 5 stars
4.8 Stars (702 Reviews)

The boss of all floss


The Expanding Floss is clinically proven to remove 2x more plaque than regular unwaxed dental floss*.

Yes, we've made flossing twice as effective. This is all thanks to our incredible network of dentists, hygienists, and our Ambassador community of 40,000+ Dental Professionals who demanded better.

With expanding technology, soft shred-resistant black thread, a smart coating, and a delicious aroma, this floss has transformed flossing for the better. We can’t wait for you to love it, too.

Refill plan: $5 per replacement every 12 weeks.
Aroma: Mint Eucalyptus
*In laboratory tests; data on file at burstoralcare.com/clinical.

Refill plan: $5.00 per replacement floss every 12 weeks

Aroma: Mint eucalyptus

Add toothpaste
Wild Mint Toothpaste
Rated 4.9 out of 5 stars
4.9 Stars (1,508 Reviews)

$6.99 paste refill every 12 weeks, cancel anytime.

Refill plan: $5.00 per replacement floss every 12 weeks, cancel anytime

You pay today:  $5.99

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

Go easy on gums

Textured, soft, shred-resistant, expanding thread scrubs away debris while pampering gums. 

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.

Instantly expands

Expands on contact with saliva to scrub more surface area than typical floss.

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 40-yard replacement bobbins.

Got questions?

More questions?
Find answers on our FAQs page.

Rated 4.8 out of 5 stars
Based on 702 reviews
Total 5 star reviews: 627 Total 4 star reviews: 51 Total 3 star reviews: 12 Total 2 star reviews: 1 Total 1 star reviews: 11
97%would recommend this product
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702 reviews
  • Rated 5 out of 5 stars
    14 seconds ago

    I flossed with regular string floss first and used this after, WHAT A DIFFERENCE! it still pulled plaque from between my teeth!

    Shelby S.
  • Rated 5 out of 5 stars
    4 months ago
    Nice for the environment. Should be standardized

    Much needed as I'm sure there's plenty of empty plastic floss containers getting tossed into landfills.

    Jung B.
    Flag of United States
  • Rated 5 out of 5 stars
    4 months ago
    Refillable Floss Set - White

    This refillable floss set is really nice and of great quality. Thank you so much!

    Allyson S.
    Flag of United States
  • Rated 4 out of 5 stars
    5 months ago
    Love my new Burst Sonic

    Love my new Burst Sonic toothbrush & the floss is incredible too! Both are making me & my hygienist very happy. And the dentist too.

    Sharon B.
    Flag of United States
  • Rated 5 out of 5 stars
    5 months ago
    Thank you!

    Love the texture and strength of the floss and the positive impact on the environment by providing a refillable case!

    Jonne O.
    Flag of United States
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