Meet the Sonic Flo
A deeper clean, made easy. The Sonic Flo is our cordless water flosser for everyday interdental cleaning—designed by UK dentists to sweep away debris where brushing struggles: between teeth, along the gumline and around braces, bridges and retainers.
Key features at a glance
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Smart display + 4 modes: Choose Clean, Gentle, Jet or Custom and see settings at a glance on the smart screen.
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IPX7 waterproof: Built for bathroom use and shower-friendly.
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270 ml detachable tank: Large, easy-fill reservoir that pops off for quick rinsing; leak-resistant design.
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Long-life battery: USB-rechargeable with up to 40 days of typical use per charge (usage dependent).
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Precision angled nozzle: Targets tight spaces and the gumline with control.
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Ready out of the box: Includes 2 standard cleaning nozzles.
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Travel-ready: Compact, cordless design for home, office or trips.
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Backed by Sonic Dental: Responsive UK support and a proper warranty.
Why you’ll love water flossing with Sonic Flo
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Reaches where bristles miss — helps clear food debris and disrupt plaque between teeth and along the gumline.
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Comfort you can tune — start on Gentle and step up as you like, or set your own Custom routine.
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Fast habit, fresher feel — most people finish in about a minute, making it easy to stick with every day.
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Orthodontic friendly — the angled nozzle helps you work around braces, implants, bridges and retainers.
How to use
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Fill the 270 ml tank with clean, lukewarm water.
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Choose a mode on the smart display (start with Gentle if you’re new).
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Lean over the sink, keep lips slightly closed and glide along the gumline, pausing briefly between teeth.
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Rinse the tank and tip after use; detach the tank to clean and air-dry.
Specs (quick)
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Water resistance: IPX7
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Tank: 270 ml, detachable
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Modes: Clean / Gentle / Jet / Custom
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Battery & charging: USB-rechargeable, up to 40 days typical use
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In the box: Sonic Flo, 2 standard nozzles, USB charging cable, quick start guide
FAQs
Is Sonic Flo suitable with braces or implants?
Yes—use Gentle to start, aim along the gumline and around brackets/fixtures. Follow your clinician’s advice if you’ve had recent treatment.
How often should I use it?
Most people use it once daily, ideally in the evening. Consistency matters more than the exact time.
Can I add mouthwash to the tank?
You can add a small amount of alcohol-free mouthwash diluted with water. Rinse the tank afterwards.
Is it messy?
It’s easy once you get the hang of it. Lean over the sink and keep lips slightly closed to control spray.
How long does the battery last?
Up to 40 days of typical use per charge (varies by mode, pressure and session length).
How often should I replace the nozzle?
Every 3–6 months, or sooner if worn.
Can I use it in the shower?
Yes—IPX7 waterproof. Keep the USB charging port and cable dry and never charge in wet environments.
What support do I get?
Sonic Flo is backed by a proper warranty and responsive UK support.
Ready for a cleaner gumline in about a minute?
Shop the Sonic Flo and start your new daily routine today.