“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”
Clinically backed
BPA & PFAS-free
Cruelty-free
24/7 expert support
Refill plan: $5.00 per replacement bobbin every 12 weeks, cancel anytime
You pay today:
$5.00
Why our Floss is boss
Our Floss boldly goes where no other floss has been before, expanding between teeth upon contact with saliva. Deep cleaning and developed with BURST Ambassador Dental Professionals, it's an oral care Holy Grail.
Expanding technology
Saliva makes our floss expand. That means more surface area to give a deeper clean. Gums rejoice!
Charcoal black coating
Adsorbs (we promise that’s a word) coffee, wine, and other lingering stains from your teeth.
See what you clean
Our black Refillable Floss lets you see all the crud hiding between your teeth.
Environmentally conscious
Our case is reusable and comes with a lifetime guarantee. The koalas will love you for using it.
Stain removing
coating
Adsorbs coffee, wine and other hard to remove stains from your teeth.
Textured and expandable
Our floss expands on contact with saliva to give you a clean that’ll impress your dentist.
The 8 Best Lip and Oral Care Products of 2021, According to Health Editors
Curious what people think?
Our BURST Ambassador Dental Professionals and customers know their stuff. You should listen to them.
Rated 4.9 out of 5 stars
4.9 Stars (1,565 Reviews)
“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!”
“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”
“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!!!”
Total 5 star reviews: 1.4k Total 4 star reviews: 89 Total 3 star reviews: 30 Total 2 star reviews: 6 Total 1 star reviews: 14
97%would recommend these products
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1,565 reviews
- CHCarrie H.Verified BuyerReviewed By: BURST AmbassadorYesterdayReviewed By: BURST AmbassadorReviewingExpanding FlossRated 5 out of 5 starsMy favorite FLOSS!
Love this floss!
- JJessicaYesterdayReviewingReplacement FlossRated 5 out of 5 stars5 Stars
Love this floss, and love that I can buy refills instead of an entire new case. I do wish it were still in local stores.
- RRobin1 week agoReviewingExpanding FlossRated 3 out of 5 stars3 Stars
Its a good product and cleans much better than store floss. But for the price they should send you a new dispencer every month. I dont like getting a roll of floss and have to fight it into the old plastic container. And eventuly the plastic container breaks and gets dirty. Please fix this Burst. $12.50 for a little roll of string you would think I could get a new dispencer each time.
- SCSarah C.Verified BuyerReviewed By: BURST Ambassador1 week agoReviewed By: BURST AmbassadorReviewingFree Expanding FlossRated 5 out of 5 starsGreat flossing
Great floss, isn’t flimsy or break. Fee like it cleans between the teeth not like others
- AApril2 weeks agoReviewingFloss RefillRated 5 out of 5 stars5 Stars
I love this floss. Stuff sticks to it so you know its doing its job. Its the only floss I like to use.