---
title: "Smile Therapy Ultrasonic Tooth Cleaner — £39K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/smile-therapy-ultrasonic-tooth-cleaner"
last_updated: "2026-07-31T14:28:33.582Z"
locale: en
meta:
description: "Niche score 43/100 · £39K/yr market · 91K searches/yr · £23.03 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · £39K/yr market · 91K searches/yr · £23.03 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Smile Therapy Ultrasonic Tooth Cleaner — £39K/yr Amazon UK Niche (2026) - Flapen"
---
# **smile therapy ultrasonic tooth cleaner**
**Skip it**
Soft demand (-31.5% this quarter) — this niche doesn't clear our bar today.
Market size 10Growth 9Conversion 23Competition 30Returns 96Price range 90Avg price 95Brand share 34Review moat 25Quality gap 95
**Returns**
**Incredible****0.8%**
return rate — above 5% kills the launch gate
**Quality gap**
**Incredible****4.0★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Incredible****£23.03**
avg listing price — sweet spot $15–$100
**Price range**
**Great****£13.26–£38.91**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****84%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****67%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****4,310.19**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Bad****1.8%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****£39K**
£39K/yr · 91K searches
**Growth**
**Bad****-31.5%**
90-day search growth — must beat 0% to launch
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500") [** Quality Gap**](https://flapen.com/research/niches?market=uk&signal=quality_gap "Avg rating < 4.0") [** Out of Stock**](https://flapen.com/research/niches?market=uk&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon United Kingdom niche tracking, smile therapy ultrasonic tooth cleaner is a £39K/yr Amazon United Kingdom market (91K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 43/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **smile therapy ultrasonic tooth cleaner market data**
- **Units sold / yr**
- **2K–3K**
- avg 0–100/product
- **Revenue / yr**
- **£46K–£58K**
- units × avg price
- **Conversion rate**
- **1.8%**
- **Avg BSR**
- **#93**
- **Page quality**
- **0%**
- **Prime**
- **67%**
- **Sponsored**
- **95%**
- **Out of stock**
- **20.0%**
- **Avg brand age**
- **24 months**
- **Avg seller age**
- **172 days**
## **Competition & brand share**
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▼falling
**Sellers**
**27**
**Top-5 brand share**
**84%**
Top 20: 98%
**Top-5 click share**
**67%**
Top 20: 99%
**Open market**
**13%**
- Generic23% - Smile Therapy22% - MEPRFROT14% - HOKIN14% - HANGSUN10% - MySweetSmile3% - Open — no brand owns it (6 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 76 weeks — -31.5% search growth over the last 90 days.
3K2KPrime Day '25Spike '25Spike '26 seasonMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Jan, Feb · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/smile-therapy-ultrasonic-tooth-cleaner/trend)
## **Top smile therapy ultrasonic tooth cleaner products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%£2K10%£4K15%£6K20%£8K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 21 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**ortable Dental Care Set Oral Cleaner & Toothbrush (B)**Generic**£13.97**1.0★1 rev](https://www.amazon.co.uk/dp/B0GY2RSQ99) [2**Dental Care Package Portable Oral Care Tools for Home (Blue)**MEPRFROT**£20.18**2.5★3 rev](https://www.amazon.co.uk/dp/B0GN81TCPK) [3**Smile Therapy Water flosser for Teeth Removes Plaque & Debris 5 Modes**Smile Therapy**£28.88**4.3★88 rev](https://www.amazon.co.uk/dp/B0DH8HRJK5) [4**HOKIN Plaque Remover Dental Care Kit Teeth Cleaning Tool Dental Care Kit Tooth Filling Repair Set Stainless Steel Dental Tools for Men Women Kids and Pet Care (5)**HOKIN**£38.91**4.4★7,484 rev](https://www.amazon.co.uk/dp/B0DXTQ5ZSY) [5**Hangsun Water Flosser for Teeth Cordless Oral Irrigator Dental Water Jet Electric Tooth Flosser with 6 Jet Tips 300ML Water Tank USB Rechargeable for Travel and Home Use (Black)**HANGSUN**£21.45**4.3★28,728 rev](https://www.amazon.co.uk/dp/B0BLVM69CW)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Portable Oral Hygiene Set Travel Cleaning Kit for Daily Use (Blue)**Generic**£13.26**1 rev1mo ago](https://www.amazon.co.uk/dp/B0H3KBL147) [**ortable Dental Care Set Oral Cleaner & Toothbrush (B)**Generic**£13.97**1 rev3mo ago](https://www.amazon.co.uk/dp/B0GY2RSQ99) [**Portable Ultrasonic Dental Care Set Oral Cleaner & Toothbrush Plaque Stain Cleaning Tool USB Powered**Generic**£19.70**8 rev3mo ago](https://www.amazon.co.uk/dp/B0GV3WPZJQ) [**Dental Care Package Portable Oral Care Tools for Home Multi-Function Oral Care with USB Cable**Funthy**£15.31**4 rev4mo ago](https://www.amazon.co.uk/dp/B0GQ35NFH1) [**Electric Plaque Remover for Teeth with 5 Speeds & USB Rechargeable | Tartar Remover for Teeth | Teeth Cleaning Tools for Home Oral Care. Ideal for Teeth Cleaning Plaque Removal to do at Home**Bodyblooms**£15.61**33 rev5mo ago](https://www.amazon.co.uk/dp/B0GNNSSWMQ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Portable Oral Hygiene Set Travel Cleaning Kit for Daily Use (Blue)**Generic**£13.26**5.0★**▲ 197%**](https://www.amazon.co.uk/dp/B0H3KBL147) [**Electric Plaque Remover for Teeth with 5 Speeds & USB Rechargeable | Tartar Remover for Teeth | Teeth Cleaning Tools for Home Oral Care. Ideal for Teeth Cleaning Plaque Removal to do at Home**Bodyblooms**£15.61**4.0★**▲ 193%**](https://www.amazon.co.uk/dp/B0GNNSSWMQ) [**ortable Dental Care Set Oral Cleaner & Toothbrush (B)**Generic**£13.97**1.0★**▲ 191%**](https://www.amazon.co.uk/dp/B0GY2RSQ99) [**HOKIN Plaque Remover Dental Care Kit Teeth Cleaning Tool Dental Care Kit Tooth Filling Repair Set Stainless Steel Dental Tools for Men Women Kids and Pet Care (Classic White)**HOKIN**£35.08**4.3★**▲ 191%**](https://www.amazon.co.uk/dp/B0G6RSWDSH) [**Britiva Electric Tooth Polisher Plaque Remover for Teeth Tooth Stain Tartar Remover Teeth Cleaner Dental Cleaning Kit for Tooth Whitening 5 Modes Rechargeable & LED Light**Britiva**£22.56**4.3★**▲ 169%**](https://www.amazon.co.uk/dp/B0FM4GXSFR)
**~~View all trending →~~**
## **What buyers say about smile therapy ultrasonic tooth cleaner**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Oral Hygiene**16%
*“It was great on the teeth”*
**Quality-Overall**14%
*“The build quality feels solid”*
**Value For Money**11%
*“Money well spent”*
**Ease Of Use**8%
*“Ease of use”*
**Advertised Vs Actual Product**7%
*“Working as advertised”*
**Efficiency**5%
*“it turns out to be effective”*
**Tooth Brightening**5%
*“Teeth whitening”*
**Strength**5%
*“Seems sturdy”*
**Ease Of Cleaning**3%
*“Easy to clean”*
**Battery Life**2%
*“Battery life seems pretty good”*
### **What buyers complain about **
**Durability**21%
*“STOPPED WORKING”*
**Charging**14%
*“Doesnt charge”*
**Functionality-Overall**5%
*“still wont turn on”*
**Quality-Overall**5%
*“the build quality is not up to standard - the head snapped off whilst trying to change it”*
**Value For Money**4%
*“expensive”*
**Oral Hygiene**4%
*“Poor for gum health”*
**Touch/Button Controls**2%
*“The buttons can sometimes be a little fiddly”*
**Stain Resistance**2%
*“they are capped so prob permanently stained”*
**Ease Of Use**2%
*“Difficult”*
**Size-Overall**2%
*“NOT FIT FOR PURPOSE”*
### **Top return reasons **
**Functionality-Overall**25%
**Charging**15%
**Defective Material/Parts**6%
**Size-Overall**5%
**Advertised Vs Actual Product**5%
**Strength**5%
**Quality-Overall**4%
**Ease Of Use**4%
**Tooth Sensitivity**3%
**Leak-Proof**3%
## **Common questions**
- **Is smile therapy ultrasonic tooth cleaner profitable to sell on Amazon United Kingdom?**
- The niche generates £39K/yr across 21 tracked products. 4 of 11 products launched in the last 360 days are still selling. 90-day search growth is -31.5%. Flapen's verdict: Skip it (43/100).
- **How competitive is the smile therapy ultrasonic tooth cleaner niche?**
- 12 brands and 27 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 84% of demand.
- **What do buyers complain about in smile therapy ultrasonic tooth cleaner?**
- Top complaints mined from reviews: Durability, Charging, Functionality-Overall. The return rate is 0.8%.
- **When does demand for smile therapy ultrasonic tooth cleaner peak?**
- Demand peaks in Jan–Feb; the busiest month runs 1.8× the quietest.
- **What does it cost to enter the smile therapy ultrasonic tooth cleaner niche?**
- Listings span £13.26–£38.91; the average listing price is £23.03 (sweet spot $15–$100). The average incumbent carries 4,310 reviews — the moat a new listing must climb.
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