Floss
Clinically proven
BPA & Teflon-free
Cruelty-free
XL size
24/7 expert support

Big Floss Dispenser- Floss Bobbin

4.8
Rated 4.8 out of 5 stars
4.8 Stars (1,628 Reviews)

XL SIZE - 6.8x more floss per spool

$30.00 $30.00

Select the refill designed for your case.
Each refill is precision-made to fit its matching dispenser for a seamless, tangle-free experience.

Refill options:
For the Big Floss Dispenser. Our longest-lasting spool — 6.8x the floss, same signature clean.

Refill plan: $30.00 for the BFD replacement floss bobbin every 24 weeks

Aroma: Mint eucalyptus

Refill plan: $30.00 for the BFD replacement floss bobbin every 24 weeks, cancel anytime

Select the refill designed for your case.
Each refill is precision-made to fit its matching dispenser for a seamless, tangle-free experience.

Refill plan: $30.00 for the BFD replacement floss bobbin every 24 weeks, cancel anytime

You pay today:  $30.00 $30.00
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!

The 8 Best Lip and Oral Care Products of 2021, according to Health Editors

“We’ll be the first to admit that we don’t always remember to floss—unless, of course, it’s with this innovative version. The fibers expand when they come in contact with saliva, which means the floss strands glide between your teeth easily and take more gunk out with them. The charcoal coating helps absorb stains and dirt (so much you can actually see it on the floss if you want to gross yourself out). The refillable packaging is just icing on the cake”

“This floss expands when it touches saliva, so it hugs every nook and cranny between your teeth. The charcoal coating helps reduce stains but also means you can see everything that comes out of your mouth (gross but satisfying).”

“This innovative string takes flossing to the next level. It expands upon contact with saliva so that it can remove even more plaque from between your teeth.”

Curious what people think?

Our BURST Ambassador Dental Professionals and customers know their stuff. You should listen to them.

4.8
Rated 4.8 out of 5 stars
4.8 Stars (1,628 Reviews)

“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 isjust so satisfying. Never thought I' II 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.”

Marisa P.

RDH, BURST Ambassador

“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. l love that it is helping remove the stains from my teeth due to my coffee addiction. And it tastes AMAZing!”

Nicole K.

RDH, BURST Ambassador

“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! lt's fine enough to reach all those hard to get to places also!!!”

Jenee C.

RDH, BURST Ambassador

See all reviews

Got questions?

More questions?
Find answers on our FAQs page.

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4.8
Rated 4.8 out of 5 stars
Based on 1,628 reviews
Total 5 star reviews: 1.5k Total 4 star reviews: 95 Total 3 star reviews: 32 Total 2 star reviews: 8 Total 1 star reviews: 17
96%would recommend these products
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1,628 reviews
  • S
    Sharon
    7 hours ago
    Reviewing
    Expanding Floss 4 Pack
    Rated 5 out of 5 stars
    5 Stars

    I love the expanding oral care. It’s one of the best. I ever had better than the other you get from the store.

    Was this helpful?
  • T
    Tom
    2 days ago
    Reviewing
    Floss Refill
    Rated 5 out of 5 stars
    5 Stars

    Best Floss on market

    Was this helpful?
  • CC
    Christina C.
    Verified Buyer
    Reviewed By: BURST Ambassador
    5 days ago
    Reviewed By: BURST Ambassador
    Reviewing
    Free Expanding Floss
    Rated 5 out of 5 stars
    Wow just wow

    Once I recline my patient and perform the oral cancer screening...I always grab the floss! Before the cleaning to show my patients the plaque they missed. Could never educate as effectively with other brands!

    Was this helpful?
  • EB
    Erin B.
    Verified Buyer
    Reviewed By: BURST Ambassador
    6 days ago
    Reviewed By: BURST Ambassador
    Reviewing
    Free Expanding Floss
    Rated 5 out of 5 stars
    Best floss

    Love that you can see all the plaque and debris on this black floss! Love that it also has xylitol infused in the strands, and that it expands to remove more stuff from between the teeth. Also like how green the company is, and they products are biodegradable.

    Was this helpful?
  • D
    Daijah
    1 week ago
    Reviewing
    BURST Expanding Dental Floss - Stain-Absorbing, Woven Tooth Floss with Xylitol Coating to Fight Cavities - Vegan, Paraben Free - Mint Eucalyptus Mouth Care Comfort Plastic Oral
    Rated 5 out of 5 stars
    5 Stars

    Very efficient and very nice results

    Was this helpful?