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.

fsa mouthwash

Skip it

Soft demand (-25.2% this quarter) — this niche doesn't clear our bar today.

Returns

Incredible0.2%

return rate — above 5% kills the launch gate

Conversion

Good5.9%

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

Okay80%

top-5 brand share — brands hold most of the demand

Competition

Okay67%

top-5 click share — leaders hold, buyers still browse

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Market size

Bad$75K

$75K/yr · 102K searches

Review moat

Bad15,507.56

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

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

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.

Peak months: Apr, May, Nov, Dec · busiest ÷ quietest = 4.8×

Open Trend

Top fsa mouthwash search terms

fsa mouthwash27K/yr -19.7%5.6% conv.
hsa mouthwash14K/yr -13.7%6.5% conv.
mouthwash fsa eligible12K/yr -35.6%5.3% conv.
mouthwash fsa11K/yr -36.1%6.1% conv.
fsa eligible mouthwash8K/yr -10.0%4.0% conv.
fsa mouthwash eligible only8K/yr -42.6%4.8% conv.
mouthwash hsa eligible6K/yr -8.1%4.9% conv.
mouthwash hsa6K/yr -22.0%5.4% conv.
mouth wash fsa eligible4K/yr -43.9%6.4% conv.
fsa mouth wash4K/yr -28.6%6.4% conv.

All 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.

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

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$9.654.7★42,237 rev

Oral-B Mouth Sore Mouthwash Special Care Oral Rinse Hydrogen Peroxide Mouthwash 16 fl oz Mouthwash Alcohol Free

Oral-B$11.174.7★8,193 rev

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$7.004.7★42,237 rev

Biotene Dry Mouth Management Oral Rinse Dry Mouth Spray and Moisturizing Gel - 1 Kit

biotène$16.814.6★6,912 rev

TheraBreath Fresh Breath Mouthwash Icy Mint Flavor Alcohol-Free 16 Fl Oz (Pack of 2)

TheraBreath$14.584.8★53,246 rev

Newest

by launch date

TheraBreath AM + PM Mouthwash Bundle 16 fl oz 2-Pack

TheraBreath$16.07268 rev

5mo ago

CloSYS Hydrogen Peroxide Mouthwash 16 oz Canker Sore Mouthwash Alcohol-Free Non-Burning Cleanses and Heals Mouth Sore Rinse

CloSYS$15.36692 rev

1y ago

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$10.649,800 rev

3y ago

Parodontax Active Gum Health Mouthwash Antiplaque and Antigingivitis Mouthwash Mint 16.9 Fl Oz

Parodontax$6.951,553 rev

4y ago

Amazon Basics Antiseptic Mouthwash Blue Mint Fights Bad Breath Plaque and Gingivitis 1 Liter 33.8 Fl Oz 1-Pack (Previously Solimo)

Amazon Basics$6.248,987 rev

4y ago

What buyers say about fsa mouthwash

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall17%

“Also, exactly as advertised and quality made”

Breathability14%

“Fresh Breath”

Value For Money14%

“Great deal”

Efficiency8%

“Item works great”

Cleansing7%

“Cleans well”

Advertised Vs Actual Product6%

“As described”

Tooth Sensitivity5%

“Good for sensitive teeth”

Ease Of Cleaning3%

“seems to clean well”

Ease Of Use3%

“Such an easy fix”

Alcohol Content2%

“Its alcohol free”

What buyers complain about

Value For Money8%

“it's expensive”

Dilute/Watery6%

“Watered down”

Breathability6%

“But it does not give you good breath”

Ingredients-Overall5%

“Beware, one of the ingredients used can be really harsh”

Functionality-Overall5%

“Didnt work well for me”

Alcohol Content5%

“absolutely no alcohol”

Moist/Dry5%

“Very Drying”

Leak-Proof4%

“leaked everywhere”

Strength3%

“not very strong”

Quality-Overall3%

“Poor Quality From Amazon”

Top return reasons

Size-Overall17%

Leak-Proof16%

Advertised Vs Actual Product15%

Value For Money14%

Functionality-Overall7%

Ingredients-Overall4%

Defective Material/Parts2%

Breathability2%