Expanding Floss

4.9
Rated 4.9 out of 5 stars
4.9 Stars (908 Reviews)

The boss of all floss

$5.99

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.

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

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4.9
Rated 4.9 out of 5 stars
4.9 Stars (1,541 Reviews)

$6.99 paste refill every 12 weeks, cancel anytime.

Refill plan: $5.00 per replacement floss 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.

4.9
Rated 4.9 out of 5 stars
Based on 908 reviews
Total 5 star reviews: 833 Total 4 star reviews: 45 Total 3 star reviews: 20 Total 2 star reviews: 6 Total 1 star reviews: 4
97%would recommend this product
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908 reviews
  • L
    Lindsay
    15 seconds ago
    Rated 5 out of 5 stars
    Expand your life with expanding floss

    I personally found this to be amazing! Not only the taste but the expanding floss works SO WELL! It's like having little micro brushes in between each tooth!

  • M
    Matthew
    Verified Reviewer
    2 weeks ago
    Rated 5 out of 5 stars
    A Five-Tooth Rating

    Literally the first dental floss I’ve used in my 45 years that I like. It’s not waxy or gross, it’s not flimsy and prone to break or snap mid-floss, it doesn’t slip out of your hand or off of your fingers, and it doesn’t cut into my gums. I’ve finally stopped lying to my dentist about flossing and have been able to work it truthfully into my daily routine.

    Well, not truthfully.

    But totally TOOTHfully.

    (My only hesitation in writing this review was that you use star ratings instead of tooth ratings, because this is definitely a five tooth product 🦷🦷🦷🦷🦷)

  • AR
    Amanda R.
    Verified Buyer
    3 weeks ago
    Rated 5 out of 5 stars
    Absolutely love

    This floss is so smooth and yet textured enough to thoroughly break up the plaque. I also love that the floss is black so you can really SEE what you are cleaning off. I recommend this product to my patients all the time!

  • JL
    Jibet L.
    Verified Buyer
    3 weeks ago
    Rated 5 out of 5 stars
    Gentle!

    I love this floss! Is gentle in the gums and grabs all the build up between the gums very good! Amazing quality and love the fact that the color is dark! Will definitely recommend to all my patients!

  • W
    Will
    1 month ago
    Rated 2 out of 5 stars
    Shreds and Breaks

    I just purchased two packs of this floss and it definitely breaks and shreds like other dental floss and gets stuck between my teeth. I’m not buying this floss again they advertise they it doesn’t break when flossing that’s totally false.

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