Expanding Floss

4.9
Rated 4.9 out of 5 stars
4.9 Stars (1,584 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 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.

Pack options:
1 pack (40 yards) of Expanding Floss

Refill plan: $5.00 per replacement floss every 4 weeks

Aroma: Mint eucalyptus

Refill plan: $5.00 per replacement floss every 4 weeks, cancel anytime

Refill plan: $5.00 per replacement floss every 4 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 1,584 reviews
Total 5 star reviews: 1.4k Total 4 star reviews: 91 Total 3 star reviews: 30 Total 2 star reviews: 6 Total 1 star reviews: 16
97%would recommend these products
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1,584 reviews
  • E
    Elaine
    Reviewed By: Customer
    3 minutes ago
    Reviewed By: Customer
    Reviewing
    Expanding Floss
    Rated 5 out of 5 stars
    Expanding floss review

    I have never felt compelled to write a review until now. I have always preferred dental tape, but it has become difficult to find. I tried the Burst floss, and I am definitely switching to this product. The black floss was extremely innovative and easily seen through the container to know when you are running low. I feel it does a superior job and am so happy I tried it!

  • FS
    Ferndanda S.
    Verified Buyer
    Reviewed By: Customer
    18 hours ago
    Reviewed By: Customer
    Reviewing
    Expanding Floss
    Rated 5 out of 5 stars
    Burst Floss & Customer Service

    Im enjoying the product and their customer service is amazing, I had issues with my package being delivered and they made sure to quickly get back to me and issue me a free replacement! Definitely recommend

  • PC
    Pam C.
    Verified Buyer
    Reviewed By: Customer
    3 days ago
    Reviewed By: Customer
    Reviewing
    Expanding Floss 4 Pack
    Rated 5 out of 5 stars
    great floss

    We love the black floss and now we have some for travel

  • RF
    Richard F.
    Verified Buyer
    Reviewed By: Customer
    1 week ago
    Reviewed By: Customer
    Reviewing
    Expanding Floss
    Rated 5 out of 5 stars
    Love dat floss

    Doesn't break. Doesn't get caught between teeth. Lets you see what you've taken out. Bravo!

  • C
    Carri
    1 week ago
    Reviewing
    Free Expanding Floss
    Rated 5 out of 5 stars
    5 Stars

    Love this! Love that its thicker than regular floss.