---
title: "Act Mouthwash — £198K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/act-mouthwash"
last_updated: "2026-07-31T16:27:37.640Z"
locale: en
meta:
description: "Niche score 41/100 · £198K/yr market · 106K searches/yr · £7.92 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · £198K/yr market · 106K searches/yr · £7.92 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Act Mouthwash — £198K/yr Amazon UK Niche (2026) - Flapen"
---
# **act mouthwash**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 39Growth 13Conversion 100Competition 15Returns 100Price range 53Avg price 22Brand share 0Review moat 48Quality gap 50
**Conversion**
**Incredible****23.5%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Price range**
**Good****£2.29–£29.17**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****1,711.17**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****£198K**
£198K/yr · 106K searches
**Avg price**
**Bad****£7.92**
avg listing price — sweet spot $15–$100
**Competition**
**Bad****82%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-23.9%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, act mouthwash is a £198K/yr Amazon United Kingdom market (106K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Feb. Verdict: Skip it — 41/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **act mouthwash market data**
- **Units sold / yr**
- **25K–30K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **£198K–£238K**
- units × avg price
- **Conversion rate**
- **23.5%**
- **Avg BSR**
- **#88**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **51 months**
- **Avg seller age**
- **181 days**
## **Competition & brand share**
The top 5 products capture 82% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▲rising
**Sellers**
**28**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**82%**
Top 20: 100%
**Open market**
**0%**
- UltraDEX86% - Gerhua6% - The Breath Co.4% - Vitacrazy2% - SHEBEEDO2% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -23.9% search growth over the last 90 days.
4K3KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Feb · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/act-mouthwash/trend)
## **Top act mouthwash search terms**
- **ultradex mouthwash**34K/yr-32.1%28.3% conv. - **ultradex**24K/yr-20.7%21.2% conv. - **tonsil stone mouthwash**23K/yr-26.3%3.8% conv. - **ultra dex mouth wash**11K/yr-14.8%25.2% conv. - **ultra dex**8K/yr-18.4%22.3% conv. - **tonsil stone remover mouthwash**3K/yr+18.1%3.6% conv. - **retardex mouthwash**2K/yr-22.6%37.6% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/act-mouthwash/search-terms)
## **Top act mouthwash 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%10%£20K20%£40K30%£59K40%£79K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**UltraDEX Daily Oral Rinse with Fluoride 500ml | Fresh Breath Mouthwash for Daily Oral Hygiene | Fluoride Mouth Rinse for Healthy Teeth & Gums**UltraDEX**£4.83**4.5★3,613 rev](https://www.amazon.co.uk/dp/B007Y5XCZE) [2**UltraDEX Daily Oral Rinse Mint 500 ml**UltraDEX**£4.97**4.6★1,747 rev](https://www.amazon.co.uk/dp/B071VT9KBZ) [3**Ultradex Daily Oral Rinse 1000Ml**UltraDEX**£9.82**4.7★713 rev](https://www.amazon.co.uk/dp/B071Z1B158) [4**120Ml Natural Tonsil Stone Remover & Mouthwash Oral Rinse Liquid to Soothe Tonsils Treat Bad Breath Relieve Dry Mouth and Whiten Teeth Gentle Formula for Adults Travel Mouthwash Mini Mouthwas/h**Gerhua**£6.43**4.3★6 rev](https://www.amazon.co.uk/dp/B0FLWKXTCC) [5**UltraDEX Daily Oral Rinse Whitening 500 ml**UltraDEX**£5.51**4.5★1,050 rev](https://www.amazon.co.uk/dp/B07144X5MX)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Tonsil Stone Remover Tonsil Stone Mouthwash Alcohol-Free Oral Rinse to Soothe Tonsils and Combat Bad Breath 4 Fl Oz**Vitacrazy**£12.76**7 rev2mo ago](https://www.amazon.co.uk/dp/B0GZYT6V3R) [**Tonsil Stone Remover 100mL Tonsil Stone Mouthwash Gentle Mouthwash for Bad Breath Alcohol-Free Natural Formula Mouth Wash for Daily Oral Care Dry Mouth Relief Travel-Friendly Oral Rinse**SHEBEEDO**£7.49**3 rev7mo ago](https://www.amazon.co.uk/dp/B0G5Z1CVQ9) [**120Ml Natural Tonsil Stone Remover & Mouthwash Oral Rinse Liquid to Soothe Tonsils Treat Bad Breath Relieve Dry Mouth and Whiten Teeth Gentle Formula for Adults Travel Mouthwash Mini Mouthwas/h**Gerhua**£6.43**6 rev11mo ago](https://www.amazon.co.uk/dp/B0FLWKXTCC) [**The Breath Co. Alcohol Free Mouthwash. Dentist Formulated Oral Rinse for 12 Hours of Fresh Breath ICY Mint Flavour 300 ml**The Breath Co.**£3.93**3,476 rev1y ago](https://www.amazon.co.uk/dp/B0DSJK5F3P) [**UltraDEX Daily Oral Rinse Mint 500 ml**UltraDEX**£4.97**1,747 rev9y ago](https://www.amazon.co.uk/dp/B071VT9KBZ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Tonsil Stone Remover Tonsil Stone Mouthwash Alcohol-Free Oral Rinse to Soothe Tonsils and Combat Bad Breath 4 Fl Oz**Vitacrazy**£12.76**5.0★**▲ 304%**](https://www.amazon.co.uk/dp/B0GZYT6V3R) [**120Ml Natural Tonsil Stone Remover & Mouthwash Oral Rinse Liquid to Soothe Tonsils Treat Bad Breath Relieve Dry Mouth and Whiten Teeth Gentle Formula for Adults Travel Mouthwash Mini Mouthwas/h**Gerhua**£6.43**4.3★**▲ 133%**](https://www.amazon.co.uk/dp/B0FLWKXTCC) [**UltraDEX Low-Abrasion Toothpaste 75Ml**UltraDEX**£3.76**4.5★**▲ 72%**](https://www.amazon.co.uk/dp/B007Y5XD3A) [**The Breath Co. Alcohol Free Mouthwash. Dentist Formulated Oral Rinse for 12 Hours of Fresh Breath ICY Mint Flavour 300 ml**The Breath Co.**£3.93**4.6★**▲ 51%**](https://www.amazon.co.uk/dp/B0DSJK5F3P) [**UltraDEX Daily Oral Rinse with Fluoride 500ml | Fresh Breath Mouthwash for Daily Oral Hygiene | Fluoride Mouth Rinse for Healthy Teeth & Gums**UltraDEX**£4.83**4.5★**— 0%**](https://www.amazon.co.uk/dp/B007Y5XCZE)
**~~View all trending →~~**
## **What buyers say about act mouthwash**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Oral Hygiene**25%
*“My gum is healthy”*
**Breathability**12%
*“Keeps breath fresh all day”*
**Value For Money**9%
*“Worth the money”*
**Efficiency**8%
*“Works well”*
**Taste-Overall**6%
*“Good taste”*
**Flavor**5%
*“Gentle flavour, powerful action”*
**Quality-Overall**4%
*“good quality”*
**Cleansing**3%
*“Cleans teeth well without being abrasive”*
**Tooth Brightening**2%
*“With her complete mouth care, my teeth are strong and naturally white and gum gradually covering previously uncovered teeth”*
**Smell**2%
*“Very good at neautralising food smells etc”*
### **What buyers complain about **
**Taste-Overall**12%
*“Horrible chemical taste”*
**Oral Hygiene**8%
*“This isn't like other mouthwash”*
**Smell**6%
*“chemical smell”*
**Flavor**5%
*“Does not include flavour sachet”*
**Durability**5%
*“Broken cap”*
**Leak-Proof**5%
*“Very bad, quick leaking bottle :-”*
**Value For Money**4%
*“why so expensive”*
**Ease Of Use**3%
*“Not much use”*
**Stale/Rotten/Spoiled**3%
*“Rubbish”*
**Strength**3%
*“Why's the cap so brittle and weak”*
### **Top return reasons **
**Size-Overall**22%
**Leak-Proof**18%
**Flavor**14%
**Functionality-Overall**10%
**Advertised Vs Actual Product**7%
**Oral Hygiene**4%
**Quality-Overall**4%
**Product Condition**3%
**Ease Of Cleaning**2%
**Value For Money**2%
## **Common questions**
- **Is act mouthwash profitable to sell on Amazon United Kingdom?**
- The niche generates £198K/yr across 12 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -23.9%. Flapen's verdict: Skip it (41/100).
- **How competitive is the act mouthwash niche?**
- 5 brands and 28 sellers compete. The top 5 products take 82% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in act mouthwash?**
- Top complaints mined from reviews: Taste-Overall, Oral Hygiene, Smell. The return rate is 0.1%.
- **When does demand for act mouthwash peak?**
- Demand peaks in Feb; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the act mouthwash niche?**
- Listings span £2.29–£29.17; the average listing price is £7.92 (sweet spot $15–$100). The average incumbent carries 1,711 reviews — the moat a new listing must climb.
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