---
title: "Fsa Mouthwash — $75K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/fsa-mouthwash"
last_updated: "2026-08-11T08:59:54.757Z"
locale: en
meta:
description: "Niche score 39/100 · $75K/yr market · 102K searches/yr · $12.44 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 39/100 · $75K/yr market · 102K searches/yr · $12.44 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Fsa Mouthwash — $75K/yr Amazon US Niche (2026) - Flapen"
---
# **fsa mouthwash**
**Skip it**
Soft demand (-25.2% this quarter) — this niche doesn't clear our bar today.
Market size 19Growth 12Conversion 66Competition 30Returns 99Price range 62Avg price 54Brand share 41Review moat 19Quality gap 23
**Returns**
**Incredible****0.2%**
return rate — above 5% kills the launch gate
**Conversion**
**Good****5.9%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Good****$6.24–$29.19**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Good****$12.44**
avg listing price — sweet spot $15–$100
**Brand share**
**Okay****80%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****67%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$75K**
$75K/yr · 102K searches
**Review moat**
**Bad****15,507.56**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-25.2%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, fsa mouthwash is a $75K/yr Amazon United States market (102K searches/yr). The top 5 brands hold 80% of demand. Demand peaks in Apr–May–Nov–Dec. Verdict: Skip it — 39/100.
Data updated Jul 14, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **fsa mouthwash market data**
- **Units sold / yr**
- **8K–10K**
- avg 250–500/product
- **Revenue / yr**
- **$100K–$124K**
- units × avg price
- **Conversion rate**
- **5.9%**
- **Avg BSR**
- **#59**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **72%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **82 months**
- **Avg seller age**
- **140 days**
## **Competition & brand share**
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▲rising
**Sellers**
**87**
**Top-5 brand share**
**80%**
Top 20: 100%
**Top-5 click share**
**67%**
Top 20: 100%
**Open market**
**12%**
- Colgate36% - Oral-B14% - TheraBreath13% - biotène9% - Orajel8% - PHS Brands7% - Open — no brand owns it (6 brands, 12%)
## **Demand & seasonality**
Weekly Amazon search volume, last 68 weeks — -25.2% search growth over the last 90 days.
6K4KSpike '25Black Friday '25 seasonAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Apr, May, Nov, Dec · busiest ÷ quietest = 4.8×
[**Open Trend **](https://flapen.com/research/us/health-household/fsa-mouthwash/trend)
## **Top fsa mouthwash search terms**
- **fsa mouthwash**27K/yr-19.7%5.6% conv. - **hsa mouthwash**14K/yr-13.7%6.5% conv. - **mouthwash fsa eligible**12K/yr-35.6%5.3% conv. - **mouthwash fsa**11K/yr-36.1%6.1% conv. - **fsa eligible mouthwash**8K/yr-10.0%4.0% conv. - **fsa mouthwash eligible only**8K/yr-42.6%4.8% conv. - **mouthwash hsa eligible**6K/yr-8.1%4.9% conv. - **mouthwash hsa**6K/yr-22.0%5.4% conv. - **mouth wash fsa eligible**4K/yr-43.9%6.4% conv. - **fsa mouth wash**4K/yr-28.6%6.4% conv. [**All search terms **](https://flapen.com/research/us/health-household/fsa-mouthwash/search-terms)
## **Top fsa 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%$7K20%$15K30%$22K40%$30K1001K10K100K 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**Colgate Peroxyl Alcohol Free Mouthwash with 1.5% Hydrogen Peroxide Mouth Sore Rinse for Canker Sores Oral Irritations and Burns Mild Mint 16.9 fl oz Bottle**Colgate**$9.65**4.7★42,237 rev](https://www.amazon.com/dp/B00WOSEKP2) [2**Oral-B Mouth Sore Mouthwash Special Care Oral Rinse Hydrogen Peroxide Mouthwash 16 fl oz Mouthwash Alcohol Free**Oral-B**$11.17**4.7★8,193 rev](https://www.amazon.com/dp/B07ZJZWJ7R) [3**Colgate Peroxyl Alcohol Free Mouthwash with 1.5% Hydrogen Peroxide Mouth Sore Rinse for Canker Sores Oral Irritations and Burns Mild Mint 8.4 fl oz Bottle**Colgate**$7.00**4.7★42,237 rev](https://www.amazon.com/dp/B004KVCV6G) [4**Biotene Dry Mouth Management Oral Rinse Dry Mouth Spray and Moisturizing Gel - 1 Kit**biotène**$16.81**4.6★6,912 rev](https://www.amazon.com/dp/B07VTCL977) [5**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)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**TheraBreath AM + PM Mouthwash Bundle 16 fl oz 2-Pack**TheraBreath**$16.07**268 rev5mo ago](https://www.amazon.com/dp/B0GJ2XMF9Q) [**CloSYS Hydrogen Peroxide Mouthwash 16 oz Canker Sore Mouthwash Alcohol-Free Non-Burning Cleanses and Heals Mouth Sore Rinse**CloSYS**$15.36**692 rev1y ago](https://www.amazon.com/dp/B0DSLS8VP6) [**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**9,800 rev3y ago](https://www.amazon.com/dp/B0C881GLNM) [**Parodontax Active Gum Health Mouthwash Antiplaque and Antigingivitis Mouthwash Mint 16.9 Fl Oz**Parodontax**$6.95**1,553 rev4y ago](https://www.amazon.com/dp/B0B46J2PF5) [**Amazon Basics Antiseptic Mouthwash Blue Mint Fights Bad Breath Plaque and Gingivitis 1 Liter 33.8 Fl Oz 1-Pack (Previously Solimo)**Amazon Basics**$6.24**8,987 rev4y ago](https://www.amazon.com/dp/B09HH8SDR6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**TheraBreath AM + PM Mouthwash Bundle 16 fl oz 2-Pack**TheraBreath**$16.07**4.8★**▲ 475%**](https://www.amazon.com/dp/B0GJ2XMF9Q) [**Parodontax Active Gum Health Mouthwash Antiplaque and Antigingivitis Mouthwash Mint 16.9 Fl Oz**Parodontax**$6.95**4.7★**▲ 258%**](https://www.amazon.com/dp/B0B46J2PF5) [**CloSYS Hydrogen Peroxide Mouthwash 16 oz Canker Sore Mouthwash Alcohol-Free Non-Burning Cleanses and Heals Mouth Sore Rinse**CloSYS**$15.36**4.4★**▲ 198%**](https://www.amazon.com/dp/B0DSLS8VP6) [**Listerine Total Care Alcohol-Free Mild Mouthwash 6 Benefit Oral Rinse for a Healthier Mouth Strengthen Enamel Mild Mint Flavor 1 L**Listerine**$8.53**4.7★**▲ 148%**](https://www.amazon.com/dp/B005IHSOD0) [**Colgate Peroxyl Alcohol Free Mouthwash with 1.5% Hydrogen Peroxide Mouth Sore Rinse for Canker Sores Oral Irritations and Burns Mild Mint 8.4 fl oz Bottle**Colgate**$7.00**4.7★**▲ 121%**](https://www.amazon.com/dp/B004KVCV6G)
**~~View all trending →~~**
## **What buyers say about fsa mouthwash**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**17%
*“Also, exactly as advertised and quality made”*
**Breathability**14%
*“Fresh Breath”*
**Value For Money**14%
*“Great deal”*
**Efficiency**8%
*“Item works great”*
**Cleansing**7%
*“Cleans well”*
**Advertised Vs Actual Product**6%
*“As described”*
**Tooth Sensitivity**5%
*“Good for sensitive teeth”*
**Ease Of Cleaning**3%
*“seems to clean well”*
**Ease Of Use**3%
*“Such an easy fix”*
**Alcohol Content**2%
*“Its alcohol free”*
### **What buyers complain about **
**Value For Money**8%
*“it's expensive”*
**Dilute/Watery**6%
*“Watered down”*
**Breathability**6%
*“But it does not give you good breath”*
**Ingredients-Overall**5%
*“Beware, one of the ingredients used can be really harsh”*
**Functionality-Overall**5%
*“Didnt work well for me”*
**Alcohol Content**5%
*“absolutely no alcohol”*
**Moist/Dry**5%
*“Very Drying”*
**Leak-Proof**4%
*“leaked everywhere”*
**Strength**3%
*“not very strong”*
**Quality-Overall**3%
*“Poor Quality From Amazon”*
### **Top return reasons **
**Size-Overall**17%
**Leak-Proof**16%
**Advertised Vs Actual Product**15%
**Value For Money**14%
**Functionality-Overall**7%
**Ingredients-Overall**4%
**Defective Material/Parts**2%
**Breathability**2%
**Alcohol Content**2%
**Product Condition**2%
## **Common questions**
- **Is fsa mouthwash profitable to sell on Amazon United States?**
- The niche generates $75K/yr across 18 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -25.2%. Flapen's verdict: Skip it (39/100).
- **How competitive is the fsa mouthwash niche?**
- 12 brands and 87 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 80% of demand.
- **What do buyers complain about in fsa mouthwash?**
- Top complaints mined from reviews: Value For Money, Dilute/Watery, Breathability. The return rate is 0.2%.
- **When does demand for fsa mouthwash peak?**
- Demand peaks in Apr–May–Nov–Dec; the busiest month runs 4.8× the quietest.
- **What does it cost to enter the fsa mouthwash niche?**
- Listings span $6.24–$29.19; the average listing price is $12.44 (sweet spot $15–$100). The average incumbent carries 15,508 reviews — the moat a new listing must climb.
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