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frontpageNavy-Wife | Staff posted Oct 27, 2025 05:33 PM
frontpageNavy-Wife | Staff posted Oct 27, 2025 05:33 PM

Onlyone 300ml Rechargeable Cordless Water Dental Flosser (White)

$7.00

$36

80% off
Amazon
139 Comments 92,051 Views
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Update: This popular deal is still available

Resource's Team via Amazon has Onlyone 300ml Rechargeable Cordless Water Dental Flosser (White) on sale for $6.99 when you apply promo code KZ7B4TOP at checkout. Shipping is free with Prime or on $35+ orders.

Thanks to Deal Hunter Navy-Wife for finding this deal.

Product Details:
  • At 1500-2000 pulses per minute at 50-150 PSI, it's 3x more effective than traditional flossing, removing 99.9% of teeth stains
  • 4 pressure settings and 5 tips for tailored care from gentle to intense. It features a memory function to save your settings and operates quietly under 55dB for effective, personalized oral care
  • BPA-Free and Upgraded 300ml Large Water Tank, Less Refilling Needed
  • Long-Lasting Battery, Portable Anywhere: Enjoy up to 30 days of use on a 3-hour charge with this compact, lightweight water dental flosser. Ideal for home or travel. Comes with a USB cable (adapter not included) for convenient charging on the go
  • IPX7 Waterproof
  • With an upgraded motor for enhanced cleaning and durability, it lasts up to 3 years

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This popular deal is still available

Resource's Team via Amazon has Onlyone 300ml Rechargeable Cordless Water Dental Flosser (White) on sale for $6.99 when you apply promo code KZ7B4TOP at checkout. Shipping is free with Prime or on $35+ orders.

Thanks to Deal Hunter Navy-Wife for finding this deal.

Product Details:
  • At 1500-2000 pulses per minute at 50-150 PSI, it's 3x more effective than traditional flossing, removing 99.9% of teeth stains
  • 4 pressure settings and 5 tips for tailored care from gentle to intense. It features a memory function to save your settings and operates quietly under 55dB for effective, personalized oral care
  • BPA-Free and Upgraded 300ml Large Water Tank, Less Refilling Needed
  • Long-Lasting Battery, Portable Anywhere: Enjoy up to 30 days of use on a 3-hour charge with this compact, lightweight water dental flosser. Ideal for home or travel. Comes with a USB cable (adapter not included) for convenient charging on the go
  • IPX7 Waterproof
  • With an upgraded motor for enhanced cleaning and durability, it lasts up to 3 years

Editor's Notes

Written by megakimcheelove | Staff

Original Post

Community Voting

Deal Score
+422
Good Deal
Get Deal at Amazon

Price Intelligence

Model: Onlyone Water Dental Flosser, 300ML Portable Oral Irrigator for Teeth, 4 Modes and 5 Jet Tips,Rechargeable Irrigation Cleaner,Electric Flossing Machine Power Flossers & Irrigator Accessories White

Deal History 

Sale Price
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Current Prices

Sort: Lowest to Highest | Last Updated 12/26/2025, 03:30 AM
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Amazon$22.69

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Top Comments

ChrisC1884
1121 Posts
356 Reputation
Same - this is my first water flosser and it's worked great for a couple months now. My dentist told me the same thing, that the water flossers work fine for day to day stuff, but you still want to choose conventional floss intermittently. Like having your car washed by a touchless car wash vs. using a sponge yourself - both do the job, one just does it a little more precisely/better.
dollardog
568 Posts
161 Reputation
I bought my first water flosser almost a year ago and I thought it would be enough to replace normal flossing. I was very wrong and wish I had just kept my normal flossing routine.

I've recently noticed degradation in my overall oral health as I now have cavities between my teeth even though I have brushed and used the water flosser daily. I've now added normal flossing after the water floss and the floss still picks up bits of plaque. So a word of warning to anyone thinking this will be enough to replace normal flossing — it won't.
pur
3074 Posts
752 Reputation
KZ7B4TOP still seems to work. If you're using the Amazon app you might be missing the step of tapping on the arrow that appears in the promo code box to apply the code.

138 Comments

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Oct 28, 2025 11:12 AM
122 Posts
Joined Jul 2008
dolphinro2Oct 28, 2025 11:12 AM
122 Posts
Code just worked a minute ago
Oct 28, 2025 12:34 PM
3 Posts
Joined Jun 2019
spacekasezoomOct 28, 2025 12:34 PM
3 Posts
Just used the code and it worked! You just have to continue to checkout and where your payment options are, there's a blue area that says gift cards, promos. You can add it there. (TOGGLE the button if you're using a phone app)
1
Oct 28, 2025 12:35 PM
31 Posts
Joined Jul 2015
ferociiousOct 28, 2025 12:35 PM
31 Posts
Quote from ilovetofu :
That is a drawback but it makes them great for travel though. Also please note that these are randomly USB-C and proprietary charging port. Mine was white and USB-C, but others have reported getting a figure 8 charging port on theirs (on previous deal for the black color I think).
Going to order this one in white to see if i get usb c, since I have the figure 8 on my previous black order.
1
Oct 28, 2025 12:35 PM
3 Posts
Joined Jun 2019
spacekasezoomOct 28, 2025 12:35 PM
3 Posts
Quote from MaroonHealth372 :
Promo code did not change price for me
Did you goto the payment screen? Thats where the promo option is. Like if you're adding a giftcard to pay for your order
Oct 28, 2025 01:15 PM
15 Posts
Joined Jan 2010
juniorjamOct 28, 2025 01:15 PM
15 Posts
Code does not work for me.
Oct 28, 2025 01:26 PM
1,790 Posts
Joined Apr 2017
killerrabbit1961Oct 28, 2025 01:26 PM
1,790 Posts
Quote from pur :

KZ7B4TOP still seems to work. If you're using the Amazon app you might be missing the step of tapping on the arrow that appears in the promo code box to apply the code.
It's the same on a desktop. You have to check the box for the $17.00 promo discount. God forbid they just show the updated price once you enter the code, that would be too easy.
Oct 28, 2025 03:31 PM
44 Posts
Joined May 2018
AmusedThread1222Oct 28, 2025 03:31 PM
44 Posts
Quote from killerrabbit1961 :
It's the same on a desktop. You have to check the box for the $17.00 promo discount. God forbid they just show the updated price once you enter the code, that would be too easy.
Not only that, you also have to hit "Use this payment method"

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Oct 28, 2025 04:45 PM
3,202 Posts
Joined Mar 2005
00dahcOct 28, 2025 04:45 PM
3,202 Posts
Only allowed to buy if you're a member of Amazon's Prime. Bummer.
Oct 28, 2025 06:21 PM
568 Posts
Joined Nov 2015
dollardogOct 28, 2025 06:21 PM
568 Posts

Our community has rated this post as helpful. If you agree, why not thank dollardog

Quote from SavingIsArt :
Dang! This ruins the happiness that many of us had from buying these water flossers at 10 bucks. Just kidding.
Gr8 price. And I personally find water flossers lot easier to use compared to the conventional thread based one, but my dentist keeps telling me to use that one though.
I bought my first water flosser almost a year ago and I thought it would be enough to replace normal flossing. I was very wrong and wish I had just kept my normal flossing routine.

I've recently noticed degradation in my overall oral health as I now have cavities between my teeth even though I have brushed and used the water flosser daily. I've now added normal flossing after the water floss and the floss still picks up bits of plaque. So a word of warning to anyone thinking this will be enough to replace normal flossing — it won't.
2
Oct 28, 2025 08:09 PM
165 Posts
Joined Jan 2006
craigh99Oct 28, 2025 08:09 PM
165 Posts
Code still working!
Oct 28, 2025 10:24 PM
2,586 Posts
Joined Sep 2008
SanshellOct 28, 2025 10:24 PM
2,586 Posts
Code works but can only be used once
Oct 29, 2025 01:00 AM
260 Posts
Joined Jun 2011
SaveAndThriveOct 29, 2025 01:00 AM
260 Posts
Hmm. I just bought the black version a few days ago for full price.

I wonder if I could get a price match to avoid the return.

edit: nope - bought this and returning black one.
Last edited by SaveAndThrive October 28, 2025 at 07:12 PM.
1
1
Oct 29, 2025 01:24 AM
25 Posts
Joined Jul 2014
JC10sOct 29, 2025 01:24 AM
25 Posts
Got it and only operates for 2 seconds then there is a pump problem. Probably a lot of returns and rejected items. My rectangular water pick is bulkier but it works consistently. Too bad because a daily shower and floss routine was the goal.
Oct 29, 2025 01:38 AM
2 Posts
Joined Sep 2006
lasloeOct 29, 2025 01:38 AM
2 Posts
works on the white one only

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Oct 29, 2025 01:18 PM
717 Posts
Joined Dec 2014
termOct 29, 2025 01:18 PM
717 Posts
Quote from dollardog :
I bought my first water flosser almost a year ago and I thought it would be enough to replace normal flossing. I was very wrong and wish I had just kept my normal flossing routine.

I've recently noticed degradation in my overall oral health as I now have cavities between my teeth even though I have brushed and used the water flosser daily. I've now added normal flossing after the water floss and the floss still picks up bits of plaque. So a word of warning to anyone thinking this will be enough to replace normal flossing — it won't.
how did you find out about the cavities? did your dentist have to xray the teeth?

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