“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.
4.6/5 (336 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!!!”
Customers also bought
Total 5 star reviews: 1.4k Total 4 star reviews: 83 Total 3 star reviews: 24 Total 2 star reviews: 6 Total 1 star reviews: 10
97%would recommend these products
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1,477 reviews
- SRSara R.Verified BuyerReviewed By: Customer8 minutes agoReviewed By: CustomerReviewingFree Expanding FlossRated 5 out of 5 starsGreat floss!
Love this floss for two reasons. It's black so you can see all of the stuff, and it's thick and strong.
- KRKayla R.Verified ReviewerReviewed By: BURST Ambassador1 week agoReviewed By: BURST AmbassadorReviewingExpanding FlossRated 5 out of 5 starsHands down only floss I’ll use
This is the best floss I’ve ever used. It’s minty, and gets the grime out no problem, even in those tight contacts. It’s black so you can see it all too! 100/10
- MEMegan E.Reviewed By: BURST Ambassador2 weeks agoReviewed By: BURST AmbassadorReviewingExpanding FlossRated 5 out of 5 starsLove this floss!
As an RDH, I am always looking for great products to recommend to my patients or try myself. I’ve seen and heard great things about BURST’s black expanding floss so I decided to try it for myself.
Not only does the color only provide great education for our patients and my kiddos (as they can see what’s actually between their teeth!), but it also expands when in contact with saliva in order to effectively clean the spaces between our teeth! 10/10 would recommend this floss. It has been a game changer. Love it!
- MMaude2 weeks agoReviewingFloss RefillRated 5 out of 5 stars5 Stars
I love this floss, I can see what it gets between my teeth.
- BBenjamin3 weeks agoReviewingExpanding FlossRated 5 out of 5 stars5 Stars
Is the best floss I try, clean better the teeth, I recommend