---
title: "Mouthwash for Bad Breath — £398K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/mouthwash-for-bad-breath"
last_updated: "2026-07-31T16:31:11.400Z"
locale: en
meta:
description: "Niche score 49/100 · £398K/yr market · 222K searches/yr · £8.68 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · £398K/yr market · 222K searches/yr · £8.68 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Mouthwash for Bad Breath — £398K/yr Amazon UK Niche (2026) - Flapen"
---
# **mouthwash for bad breath**
**Skip it**
Brand-locked demand (top 5 brands take 95% of clicks) — this niche doesn't clear our bar today.
Market size 55Growth 16Conversion 100Competition 45Returns 100Price range 46Avg price 24Brand share 14Review moat 39Quality gap 45
**Conversion**
**Incredible****20.7%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Market size**
**Good****£398K**
£398K/yr · 222K searches
**Price range**
**Okay****£2.29–£25.76**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Okay****58%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,649.89**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Bad****£8.68**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-18.9%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****95%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, mouthwash for bad breath is a £398K/yr Amazon United Kingdom market (222K searches/yr). The top 5 brands hold 95% of demand. Verdict: Skip it — 49/100.
Data updated Jul 24, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mouthwash for bad breath market data**
- **Units sold / yr**
- **40K–50K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **£347K–£434K**
- units × avg price
- **Conversion rate**
- **20.7%**
- **Avg BSR**
- **#86**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **94%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **46 months**
- **Avg seller age**
- **173 days**
## **Competition & brand share**
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**8 **▲rising
**Sellers**
**69**
**Top-5 brand share**
**95%**
Top 20: 100%
**Top-5 click share**
**58%**
Top 20: 100%
**Open market**
**3%**
- CB1273% - The Breath Co.9% - Listerine7% - UltraDEX3% - Great Oral Health2% - HISMILE2% - Open — no brand owns it (2 brands, 3%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -18.9% search growth over the last 90 days.
9K7KSpike '24Holiday '24Spike '25Prime Day '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/mouthwash-for-bad-breath/trend)
## **Top mouthwash for bad breath search terms**
- **cb12 mouthwash**58K/yr-1.8%22.8% conv. - **bad breath treatment for adults**59K/yr-29.8%10.0% conv. - **cb12**30K/yr+0.5%17.5% conv. - **bad breath**25K/yr-24.9%8.2% conv. - **fresh breath**22K/yr-32.2%7.1% conv. - **halitosis treatment**12K/yr-29.2%2.9% conv. - **bad breath treatment**6K/yr-40.7%4.1% conv. - **extreme bad breath treatment**6K/yr-43.8%6.6% conv. - **cb12 toothpaste**3K/yr-26.6%4.2% conv. - **bad breath killer**1K/yr-88.6%12.5% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/mouthwash-for-bad-breath/search-terms)
## **Top mouthwash for bad breath 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%£20K10%£40K15%£60K20%£80K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**CB12 Mint Mouthwash 250ml**CB12**£3.49**4.6★2,887 rev](https://www.amazon.co.uk/dp/B00A2L3WUW) [2**CB12 Whitening Peppermint Mouthwash 250ml**CB12**£4.00**4.4★2,220 rev](https://www.amazon.co.uk/dp/B01JZHYC1G) [3**CB 12 Spray Instant Freshness on the Go Reduces the Root Cause of Bad Breath With Zinc Acetate Mint Flavour 15 ml**CB12**£3.67**4.3★4,073 rev](https://www.amazon.co.uk/dp/B01MR5UYX6) [4**CB12 Menthol Menthol Mouthwash - Strengthens the Enamel - Pleasant Breathing for 12 Hours - 1 Litre**CB12**£11.43**4.6★2,887 rev](https://www.amazon.co.uk/dp/B00KKE8CC4) [5**CB12 Mild Mint Menthol Mouthwash 1000 ml**CB12**£10.03**4.5★1,493 rev](https://www.amazon.co.uk/dp/B00QS1S3CM)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Bad Breath Treatment for Adults 7-in-1 Advanced Breath Control Supplement & Natural Oral Breath Management with Digestive Support 120 Capsules**Vitacrazy**£23.91**6 rev2mo ago](https://www.amazon.co.uk/dp/B0GYS6PJ2F) [**Hismile iD Stain Whitening Mouthwash Gunk Removing Mouthwash for Fresh Breath Hydrogen Peroxide Mouthwash to Promote Whiter Teeth Alcohol-Free Mouthwash with Essential Oils 237ml**HISMILE**£10.06**2,853 rev7mo ago](https://www.amazon.co.uk/dp/B0GC1X785H) [**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) [**Listerine Pocket Paks Cool Mint 72s**Listerine**£6.36**2,433 rev2y ago](https://www.amazon.co.uk/dp/B012O57M3Q) [**Delvina Oral Probiotics for Bad Breath Treatment for Adults - 90 Vegan Chewable Tablets for Oral Health Teeth and Gums - Dental Probiotics for Fresh Breath - with Vitamin D3 - Lemon - 3 Month Supply**DELVINA**£15.21**1,586 rev5y ago](https://www.amazon.co.uk/dp/B09315FT1N)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Bad Breath Treatment for Adults 7-in-1 Advanced Breath Control Supplement & Natural Oral Breath Management with Digestive Support 120 Capsules**Vitacrazy**£23.91**5.0★**▲ 353%**](https://www.amazon.co.uk/dp/B0GYS6PJ2F) [**Hismile iD Stain Whitening Mouthwash Gunk Removing Mouthwash for Fresh Breath Hydrogen Peroxide Mouthwash to Promote Whiter Teeth Alcohol-Free Mouthwash with Essential Oils 237ml**HISMILE**£10.06**4.3★**▲ 347%**](https://www.amazon.co.uk/dp/B0GC1X785H) [**CB12 Sensitive: Fight Bad Breath for 12 Hours for Sensitive Teeth Alcohol-Free Soft Menthol Flavor 250 ml**CB12**£3.87**4.5★**▲ 123%**](https://www.amazon.co.uk/dp/B07T733KNB) [**CB12 250ML 3 Pack Mint / Menthol Mouthwash**CB12**£13.02**4.7★**▲ 106%**](https://www.amazon.co.uk/dp/B00R8C68NG) [**CB12 Mild Mint Menthol Mouthwash 1000 ml**CB12**£10.03**4.5★**▲ 86%**](https://www.amazon.co.uk/dp/B00QS1S3CM)
**~~View all trending →~~**
## **What buyers say about mouthwash for bad breath**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Oral Hygiene**19%
*“Good for the gums”*
**Breathability**11%
*“Fresh breath”*
**Quality-Overall**10%
*“Good quality mouthwash”*
**Taste-Overall**8%
*“Nice taste”*
**Advertised Vs Actual Product**7%
*“Does what is being advertised”*
**Freshness**5%
*“They are perfect for on-the-go freshness”*
**Cleansing**5%
*“My teeth feel cleaner”*
**Value For Money**5%
*“Good value for money”*
**Tooth Brightening**4%
*“it does seem effective at whitening teeth”*
**Efficiency**3%
*“Works perfectly”*
### **What buyers complain about **
**Taste-Overall**15%
*“Tastes awful”*
**Value For Money**15%
*“Bit expensive”*
**Oral Hygiene**10%
*“gums no spectacular results for me frankly I was a little underwhelmed”*
**Advertised Vs Actual Product**6%
*“Doesnt do as stated”*
**Color**2%
*“The liquid itself is a brown colour rather than what I expected to be purple”*
**Breathability**2%
*“No difference to breath”*
**Allergies**2%
*“Allergic reaction”*
**Stain Resistance**2%
*“Did it remove stains”*
**Quality-Overall**2%
*“Look very cheap”*
**Strength**1%
*“Not as strong”*
### **Top return reasons **
**Leak-Proof**21%
**Advertised Vs Actual Product**15%
**Functionality-Overall**12%
**Taste-Overall**8%
**Size-Overall**6%
**Value For Money**5%
**Ingredients-Overall**3%
**Tooth Sensitivity**3%
**Flavor**3%
**Ease Of Use**3%
## **Common questions**
- **Is mouthwash for bad breath profitable to sell on Amazon United Kingdom?**
- The niche generates £398K/yr across 18 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -18.9%. Flapen's verdict: Skip it (49/100).
- **How competitive is the mouthwash for bad breath niche?**
- 8 brands and 69 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 95% of demand.
- **What do buyers complain about in mouthwash for bad breath?**
- Top complaints mined from reviews: Taste-Overall, Value For Money, Oral Hygiene. The return rate is 0.1%.
- **When does demand for mouthwash for bad breath peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the mouthwash for bad breath niche?**
- Listings span £2.29–£25.76; the average listing price is £8.68 (sweet spot $15–$100). The average incumbent carries 2,650 reviews — the moat a new listing must climb.
## **Related niches in Health & Personal Care**
- 69 [**cooling towel**](https://flapen.com/research/uk/health-personal-care/cooling-towel)£1.1M/yr>1,000%**Launch it**- 70 [**collagen**](https://flapen.com/research/uk/health-personal-care/collagen)£6.6M/yr-20.1%**Worth a look**- 70 [**dry skin remover feet**](https://flapen.com/research/uk/health-personal-care/dry-skin-remover-feet)£236K/yr+78.2%**Worth a look**- 70 [**stryde knee strap**](https://flapen.com/research/uk/health-personal-care/stryde-knee-strap)£112K/yr>1,000%**Worth a look**- 70 [**libre 2 sensor covers**](https://flapen.com/research/uk/health-personal-care/libre-2-sensor-covers)£240K/yr+67.1%**Worth a look**- 70 [**water retention tablets**](https://flapen.com/research/uk/health-personal-care/water-retention-tablets)£470K/yr+47.2%**Worth a look**[**All Health & Personal Care niches **](https://flapen.com/research/uk/health-personal-care)