Prime Day Deal: AquaSonic’s Cordless Water Flosser Is 40% Off

Brit+Co Staff on June 18, 2026

If string floss is the chore you skip, a water flosser is the fix — and AquaSonic’s cordless Aqua Flosser is an easy, affordable way to start. It’s an ADA-accepted, portable oral irrigator that blasts away what brushing misses, and it’s genuinely simple to use. For Prime Day, it’s 40% off.

The deal

For Prime Day — June 23–26, 2026 — the AquaSonic Cordless Water Flosser is 40% off, down to $29.95 (from $49.95). It’s a Prime Day deal, so a Prime membership is required, and the price ends when the event closes on June 26 (or earlier if it sells out).

What it is

It’s an ADA-accepted, cordless water flosser — fully portable, waterproof, and lightweight, with a rechargeable battery and a removable water tank that’s easy to fill and clean. It has three modes (Normal, Soft, and Pulse) so you can dial in the pressure, and it comes with five tips — two standard, plus periodontal, orthodontic, and tongue-scraper tips — and a soft-touch travel bag. Per AquaSonic, it helps remove plaque and reduce gingivitis.

How to use it

Fill the tank, pick a tip (start with a standard tip; the orthodontic tip is handy for braces and the periodontal tip for the gumline), and lean over the sink — flossing with water is splashy at first. Start on Soft to get used to the sensation, then move up to Normal or Pulse. Aim the stream along the gumline and between teeth; the tank holds enough for a full pass, and it recharges between uses.

Who it’s for

It’s for anyone who hates traditional flossing, has braces or other dental work, or just wants a more thorough clean — and because it’s cordless and comes with a travel bag, it’s easy to take along. If you want a high-capacity countertop unit for the whole family, that’s a bulkier, pricier category; this is the portable, get-started pick.

Frequently asked questions

When is the Prime Day deal?
The 40% discount — down to $29.95 (from $49.95) — runs during Amazon Prime Day, June 23–26, 2026. A Prime membership is required, and the price ends when the event closes (or earlier if it sells out).
What’s included, and what modes does it have?
It has three modes — Normal, Soft, and Pulse — and comes with five tips (two standard, one periodontal, one orthodontic, and a tongue scraper) plus a soft-touch travel bag. The water tank is removable for easy filling and cleaning.
Is it ADA accepted and good for braces?
Yes — it carries the ADA Seal of Acceptance, and the included orthodontic tip is designed for cleaning around braces. AquaSonic says it helps remove plaque and reduce gingivitis.
Where can I buy it?
It’s available at Amazon — use the button above for the current listing and price.