---
title: "Mouthwash — $3.2M/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/mouthwash"
last_updated: "2026-08-12T11:10:17.586Z"
locale: en
meta:
description: "Amazon product research for mouthwash: $3.2M/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for mouthwash: $3.2M/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Mouthwash — $3.2M/mo Amazon US Product Research (2026)"
---
# **Mouthwash**
**Launch it**
A $38.3M/yr market growing +2.1% this quarter with returns at 0.2% — clears our launch bar.
Market size 100Growth 28Conversion 99Competition 66Returns 99Price range 19Avg price 49Brand share 10Review moat 16Quality gap 18
**Market size**
**Incredible****$38.3M**
$38.3M/yr · 17.5M searches
**Conversion**
**Incredible****18.5%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.2%**
return rate — above 5% kills the launch gate
**Competition**
**Good****45%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Okay****$11.83**
avg listing price — sweet spot $15–$100
**Growth**
**Okay****+2.1%**
90-day search growth — must beat 0% to launch
**Price range**
**Bad****$4.39–$17.50**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****21,404.03**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****96%**
top-5 brand share — brand-locked demand
## **Is mouthwash profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, mouthwash is a $38.3M/yr Amazon United States market (17.5M searches/yr). The top 5 brands hold 96% of demand. Verdict: Launch it — 56/100.
Data updated Jul 14, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mouthwash market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **1.0M–1.0M**
- avg 100,000–125,000/product
- **Revenue / yr**
- **$11.8M–$11.8M**
- units × avg price
- **Conversion rate**
- **18.5%**
- **Avg BSR**
- **#52**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **83%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **62 months**
- **Avg seller age**
- **140 days**
## **Competition: brands, sellers & click share**
The top 5 products take 45% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**6 **▼falling
**Sellers**
**139**
**Top-5 brand share**
**96%**
Top 20: 100%
**Top-5 click share**
**45%**
Top 20: 88%
**Open market**
**0%**
- TheraBreath44% - Listerine18% - Crest17% - Finish10% - Amazon Basics7% - The Breath Co.4% - Open — no brand owns it (0%)
## **mouthwash demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +2.1% search growth over the last 90 days.
450K350KPrime Day '25Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/health-household/mouthwash/trend)
## **Top mouthwash search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **mouthwash**6.9M/yr+1.8%13.3% conv. - **therabreath mouthwash**2.8M/yr+1.1%14.3% conv. - **mouth wash**1.2M/yr+4.3%12.2% conv. - **therabreath**784K/yr+1.1%8.8% conv. - **mouth wash for adults**703K/yr-9.8%14.8% conv. - **mouthwash thera breath**524K/yr+4.7%19.4% conv. - **rinse aid**436K/yr+14.4%19.6% conv. - **mouthwash alcohol free**432K/yr+8.0%12.7% conv. - **dishwasher rinse aid**390K/yr+11.0%18.2% conv. - **crest mouthwash**381K/yr-0.7%11.5% conv. [**All search terms **](https://flapen.com/research/us/health-household/mouthwash/search-terms)
## **Top mouthwash products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%$1.9M10%$3.8M15%$5.7M20%$7.7M1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**TheraBreath Fresh Breath Mouthwash Icy Mint Flavor Alcohol-Free 16 Fl Oz (Pack of 2)**TheraBreath**$14.58**4.8★53,246 rev](https://www.amazon.com/dp/B00IRKRK9O) [2**Crest Mouthwash Pro Health Complete Clean CPC (cetylpyridinium chloride) Antigingivitis/Antiplaque Alcohol Free Clean Mint 1 L (33.8 fl oz)**Crest**$4.91**4.7★12,710 rev](https://www.amazon.com/dp/B003CP12O8) [3**TheraBreath Healthy Gums Oral Rinse Antigingivitis Clean Mint Flavor Dentist Formulated to Help Prevent Gingivitis and Support Gum Health Alcohol Free 16 Fl Oz (Pack of 2)**TheraBreath**$16.48**4.8★33,180 rev](https://www.amazon.com/dp/B0758F8KDC) [4**Listerine Cool Mint Alcohol-Free Mild Mouthwash Oral Rinse Kills 99.9% of Germs that Cause Bad Breath Less Intense Taste Mild Mint Flavor 1 L**Listerine**$6.53**4.7★13,109 rev](https://www.amazon.com/dp/B005IHSPLQ) [5**Crest Mouthwash Pro Health Multi-Protection 1L 2 Pack 6-in-1 Benefits Alcohol Free Enamel Repair Breath Freshener Anti Cavity Fluoride mouthwash Bad Breath Treatment for Adults Contains CPC**Crest**$10.64**4.8★9,800 rev](https://www.amazon.com/dp/B0C881GLNM)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Crest Mouthwash Pro-Health Bold Fresh Breath 99% Germ Kill Antigingivitis & Antiplaque Clean Mint - 1 L (33.8 fl oz) Pack of 2**Crest**$15.82**231 rev3mo ago](https://www.amazon.com/dp/B0GLQQ7HJN) [**TheraBreath AM + PM Mouthwash Bundle 16 fl oz 2-Pack**TheraBreath**$16.07**268 rev5mo ago](https://www.amazon.com/dp/B0GJ2XMF9Q) [**TheraBreath Complete Mouthwash Revitalizing Mint 16 fl oz 2-Pack**TheraBreath**$17.50**215 rev5mo ago](https://www.amazon.com/dp/B0GJ2V1X83) [**TheraBreath Whitening Mouthwash Dazzling Mint 1 Liter**TheraBreath**$15.98**314 rev1y ago](https://www.amazon.com/dp/B0FCQ5C89G) [**TheraBreath Healthy Gums Oral Rinse Antigingivitis Clean Mint Flavor Dentist Formulated to Help Prevent Gingivitis and Support Gum Health Alcohol Free 1 Liter**TheraBreath**$16.00**793 rev1y ago](https://www.amazon.com/dp/B0FDBL3YWC)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**TheraBreath Complete Mouthwash Revitalizing Mint 16 fl oz 2-Pack**TheraBreath**$17.50**4.9★**▲ 286%**](https://www.amazon.com/dp/B0GJ2V1X83) [**Crest Mouthwash Pro-Health Bold Fresh Breath 99% Germ Kill Antigingivitis & Antiplaque Clean Mint - 1 L (33.8 fl oz) Pack of 2**Crest**$15.82**4.6★**▲ 266%**](https://www.amazon.com/dp/B0GLQQ7HJN) [**TheraBreath AM + PM Mouthwash Bundle 16 fl oz 2-Pack**TheraBreath**$16.07**4.8★**▲ 249%**](https://www.amazon.com/dp/B0GJ2XMF9Q) [**TheraBreath Whitening Mouthwash Dazzling Mint 1 Liter**TheraBreath**$15.98**4.8★**▲ 88%**](https://www.amazon.com/dp/B0FCQ5C89G) [**TheraBreath Healthy Gums Oral Rinse Antigingivitis Clean Mint Flavor Dentist Formulated to Help Prevent Gingivitis and Support Gum Health Alcohol Free 1 Liter**TheraBreath**$16.00**4.8★**▲ 63%**](https://www.amazon.com/dp/B0FDBL3YWC)
**~~View all trending →~~**
## **What reviews say buyers love and hate about mouthwash**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**18%
*“Great Value”*
**Breathability**15%
*“Fresh Breath”*
**Quality-Overall**15%
*“Awesome quality”*
**Cleansing**8%
*“Good clean feeling”*
**Efficiency**7%
*“Does the job”*
**Advertised Vs Actual Product**6%
*“Arrived as described”*
**Ease Of Cleaning**4%
*“Cleans Well”*
**Alcohol Content**3%
*“contains no alcohol”*
**Ease Of Use**3%
*“Easy Fill”*
**Tooth Brightening**3%
*“Great for whitening”*
### **What buyers complain about **
**Alcohol Content**8%
*“Too much alcohol”*
**Value For Money**7%
*“A little expensive”*
**Dilute/Watery**6%
*“Watered down”*
**Breathability**5%
*“But it does not give you good breath”*
**Functionality-Overall**5%
*“Not effective at all”*
**Ingredients-Overall**4%
*“Beware, one of the ingredients used can be really harsh”*
**Ease Of Cleaning**4%
*“My glasses were not being cleaned”*
**Leak-Proof**4%
*“it was leaking”*
**Stain Resistance**4%
*“Stained my teeth”*
**Size-Overall**3%
*“tiny bottle size”*
### **Top return reasons **
**Leak-Proof**21%
**Size-Overall**18%
**Advertised Vs Actual Product**15%
**Value For Money**13%
**Ingredients-Overall**4%
**Functionality-Overall**4%
**Alcohol Content**3%
**Defective Material/Parts**2%
**Breathability**2%
**Smell**2%
## **Common mouthwash questions**
- **Is mouthwash profitable to sell on Amazon United States?**
- The niche generates $38.3M/yr across 29 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +2.1%. Flapen's verdict: Launch it (56/100).
- **How competitive is the mouthwash niche?**
- 6 brands and 139 sellers compete. The top 5 products take 45% of clicks and top 5 brands hold 96% of demand.
- **What do buyers complain about in mouthwash?**
- Top complaints mined from reviews: Alcohol Content, Value For Money, Dilute/Watery. The return rate is 0.2%.
- **When does demand for mouthwash peak?**
- Demand is steady year-round — the busiest month runs 1.7× the quietest.
- **What does it cost to enter the mouthwash niche?**
- Listings span $4.39–$17.50; the average listing price is $11.83 (sweet spot $15–$100). The average incumbent carries 21,404 reviews — the moat a new listing must climb.
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