---
title: "Whitening Mouthwash — $2.2M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/whitening-mouthwash"
last_updated: "2026-08-09T11:21:52.212Z"
locale: en
meta:
description: "Niche score 51/100 · $2.2M/yr market. Brand-locked demand (top 5 brands take 94% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 51/100 · $2.2M/yr market. Brand-locked demand (top 5 brands take 94% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Whitening Mouthwash — $2.2M/yr Amazon US Niche (2026) - Flapen"
---
# **whitening mouthwash**
**Worth a look**
Shows low returns (0.2%), but brand-locked demand (top 5 brands take 94% of clicks) keeps it on the watch list.
Market size 95Growth 23Conversion 98Competition 31Returns 99Price range 37Avg price 50Brand share 14Review moat 25Quality gap 23
**Returns**
**Incredible****0.2%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****17.0%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Incredible****$2.2M**
$2.2M/yr · 1.1M searches
**Avg price**
**Good****$12.01**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****$4.31–$21.19**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Okay****66%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****4,055.95**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-4.7%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Bad****94%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, whitening mouthwash is a $2.2M/yr Amazon United States market (1.1M searches/yr). The top 5 brands hold 94% of demand. Verdict: Worth a look — 51/100.
Data updated Jul 14, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **whitening mouthwash market data**
- **Units sold / yr**
- **150K–200K**
- avg 8,000–10,000/product
- **Revenue / yr**
- **$1.8M–$2.4M**
- units × avg price
- **Conversion rate**
- **17.0%**
- **Avg BSR**
- **#101**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **79%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **55 months**
- **Avg seller age**
- **135 days**
## **Competition & brand share**
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**8 **▲rising
**Sellers**
**65**
**Top-5 brand share**
**94%**
Top 20: 100%
**Top-5 click share**
**66%**
Top 20: 100%
**Open market**
**3%**
- Crest48% - TheraBreath24% - Amazon Basics9% - Colgate8% - GuruNanda5% - HISMILE2% - Open — no brand owns it (2 brands, 3%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -4.7% search growth over the last 90 days.
25K15KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/health-household/whitening-mouthwash/trend)
## **Top whitening mouthwash search terms**
- **whitening mouthwash**358K/yr+11.3%15.5% conv. - **mouthwash whitening**124K/yr+3.9%19.3% conv. - **crest whitening mouthwash**77K/yr+1.8%18.6% conv. - **teeth whitening mouthwash**52K/yr+16.7%11.9% conv. - **therabreath mouthwash whitening**64K/yr-49.5%13.2% conv. - **therabreath whitening**36K/yr-6.2%14.3% conv. - **crest 3d white mouthwash**52K/yr-5.9%15.1% conv. - **therabreath whitening mouthwash**39K/yr-38.7%13.7% conv. - **colgate optic white mouthwash**31K/yr+13.1%14.9% conv. - **whitening mouth wash**37K/yr-4.8%16.0% conv. [**All search terms **](https://flapen.com/research/us/health-household/whitening-mouthwash/search-terms)
## **Top whitening 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%$215K20%$430K30%$645K40%$861K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 19 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Crest Pro-Health Advanced Mouthwash Alcohol Free Extra Whitening Energizing Mint Flavor 946 mL (32 fl oz)**Crest**$7.04**4.7★22,877 rev](https://www.amazon.com/dp/B0126XBQK6) [2**Crest 3D White Mouthwash Teeth Whitening for Adults 1L 2 Pack Alcohol Free Mouth Rinse Breath Freshener Antibacterial Antiseptic Bad Breath Treatment Peroxide Free Clean Mint**Crest**$14.80**4.7★1,870 rev](https://www.amazon.com/dp/B0F4YR6KKM) [3**TheraBreath Whitening Mouthwash Dazzling Mint 1 Liter**TheraBreath**$15.98**4.8★314 rev](https://www.amazon.com/dp/B0FCQ5C89G) [4**Colgate Optic White Advanced Teeth Whitening Mouthwash 3 Pack 2% Hydrogen Peroxide Alcohol-Free and Enamel Safe ICY Fresh Mint 32 Oz**Colgate**$16.54**4.6★6,957 rev](https://www.amazon.com/dp/B07C4ND9ZN) [5**Amazon Basics Teeth Whitening Mouthwash Alcohol-Free Clean Mint Breath Freshener 32 Fluid Ounces 1-Pack (Previously Solimo)**Amazon Basics**$4.91**4.5★3,349 rev](https://www.amazon.com/dp/B09HHGW5C2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Crest 3D Clean Mint Mouthwash 32 Fluid Ounce**Crest**$7.39**314 rev1mo ago](https://www.amazon.com/dp/B075S6PRC3) [**Hismile iD Stain Whitening Mouthwash Gunk Removing Mouthwash for Fresh Breath Hydrogen Peroxide Mouthwash to Promote Whiter Teeth Peroxide Rinse with Essential Oils 237ml**HISMILE**$19.19**2,733 rev6mo ago](https://www.amazon.com/dp/B0GC1X785H) [**GuruNanda Whitening Mouthwash Up to 3 Shades Whiter Teeth in 2 Weeks Alcohol & Fluoride Free with Hydrogen Peroxide Oxyburst Technology - Wild Mint 16 oz**GuruNanda**$7.79**528 rev8mo ago](https://www.amazon.com/dp/B0FY3D89WN) [**TheraBreath Whitening Toothpaste Dazzling Mint 4 Oz 2-Pack**TheraBreath**$11.93**1,029 rev12mo ago](https://www.amazon.com/dp/B0FFVLW548) [**TheraBreath Whitening Mouthwash Dazzling Mint 1 Liter**TheraBreath**$15.98**314 rev1y ago](https://www.amazon.com/dp/B0FCQ5C89G)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Crest 3D Clean Mint Mouthwash 32 Fluid Ounce**Crest**$7.39**4.7★**▲ 285%**](https://www.amazon.com/dp/B075S6PRC3) [**Hismile iD Stain Whitening Mouthwash Gunk Removing Mouthwash for Fresh Breath Hydrogen Peroxide Mouthwash to Promote Whiter Teeth Peroxide Rinse with Essential Oils 237ml**HISMILE**$19.19**4.3★**▲ 187%**](https://www.amazon.com/dp/B0GC1X785H) [**TheraBreath Whitening Mouthwash Dazzling Mint 1 Liter**TheraBreath**$15.98**4.8★**▲ 102%**](https://www.amazon.com/dp/B0FCQ5C89G) [**GuruNanda Whitening Mouthwash Up to 3 Shades Whiter Teeth in 2 Weeks Alcohol & Fluoride Free with Hydrogen Peroxide Oxyburst Technology - Wild Mint 16 oz**GuruNanda**$7.79**4.6★**▲ 96%**](https://www.amazon.com/dp/B0FY3D89WN) [**TheraBreath Whitening + Oil Blend Oral Rinse Smooth Mint 16 fl oz**TheraBreath**$13.64**4.7★**▲ 89%**](https://www.amazon.com/dp/B0F9KFHX57)
**~~View all trending →~~**
## **What buyers say about whitening mouthwash**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Tooth Brightening**16%
*“Teeth whitening”*
**Quality-Overall**12%
*“Great price, quality, and super convenient having it delivered to the door”*
**Oral Hygiene**9%
*“It is however really good at cleaning your mouth”*
**Cleansing**9%
*“Clean Feeling”*
**Breathability**8%
*“freshens your breath”*
**Advertised Vs Actual Product**7%
*“As advertised”*
**Value For Money**7%
*“Good price”*
**Efficiency**6%
*“Product does work”*
**Taste-Overall**3%
*“Fresh taste”*
**Ease Of Use**2%
*“Clean feeling”*
### **What buyers complain about **
**Taste-Overall**12%
*“Doesnt taste very good”*
**Value For Money**12%
*“Its expensive”*
**Advertised Vs Actual Product**9%
*“deceptive advertising”*
**Color**6%
*“it brown looking”*
**Functionality-Overall**3%
*“Didnt work”*
**Stain Resistance**3%
*“This Mouthwash Can Stain Your Teeth”*
**Size-Overall**2%
*“Very large size”*
**Ease Of Cleaning**2%
*“leaves you feeling less clean”*
**Ease Of Use**2%
*“it was very weird to use”*
**Leak-Proof**2%
*“One of the bottles leaked”*
### **Top return reasons **
**Advertised Vs Actual Product**25%
**Leak-Proof**18%
**Taste-Overall**10%
**Functionality-Overall**9%
**Size-Overall**7%
**Value For Money**5%
**Ingredients-Overall**4%
**Defective Material/Parts**2%
**Smell**2%
**Product Condition**2%
## **Common questions**
- **Is whitening mouthwash profitable to sell on Amazon United States?**
- The niche generates $2.2M/yr across 19 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -4.7%. Flapen's verdict: Worth a look (51/100).
- **How competitive is the whitening mouthwash niche?**
- 8 brands and 65 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 94% of demand.
- **What do buyers complain about in whitening mouthwash?**
- Top complaints mined from reviews: Taste-Overall, Value For Money, Advertised Vs Actual Product. The return rate is 0.2%.
- **When does demand for whitening mouthwash peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the whitening mouthwash niche?**
- Listings span $4.31–$21.19; the average listing price is $12.01 (sweet spot $15–$100). The average incumbent carries 4,056 reviews — the moat a new listing must climb.
## **Related niches in Health & Household**
- 76 [**cedar oil**](https://flapen.com/research/us/health-household/cedar-oil)$1.2M/yr+214.4%**Launch it**- 77 [**nutrapure glp1 cutting mix**](https://flapen.com/research/us/health-household/nutrapure-glp1-cutting-mix)$149K/yr+940.2%**Worth a look**- 77 [**dexcom g7**](https://flapen.com/research/us/health-household/dexcom-g7)$2.0M/yr+39.9%**Launch it**- 77 [**purelia**](https://flapen.com/research/us/health-household/purelia)$635K/yr+359.7%**Worth a look**- 77 [**graduation napkins**](https://flapen.com/research/us/health-household/graduation-napkins)$302K/yr+385.7%**Worth a look**- 77 [**credit card wand**](https://flapen.com/research/us/health-household/credit-card-wand)$418K/yr+101.3%**Worth a look**[**All Health & Household niches **](https://flapen.com/research/us/health-household)