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Mouthwash

prices mostly outside the sweet spot ($1.45–$10.06) — Mouthwash doesn't clear our bar today.

Flapen Score

49
Skip it
Market size 83Growth 23Conversion 100Competition 48Returns 100Price range 0Avg price 9Brand share 16Review moat 24Quality gap 28
This niche Category average

Is Mouthwash profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Mouthwash is a £1.3M/yr Amazon United Kingdom market (2.0M searches/yr). The top 5 brands hold 94% of demand. Verdict: Skip it — 49/100.

Mouthwash: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -5.0% over the last 90 days and 21.5% of searches end in a purchase.

£1.3M

revenue / yr

Units sold / yr500K
Search volume / yr-5.0%2.0M
Conversion rate21.5%
Avg price£3.13

Who owns the niche?

The top 5 brands hold 94% of demand, so 6% of the market is open.

6%

open market share

Brands · sellers7 · 95
Top-5 product click share56%
Open market6%
Avg brand age55 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.6★ — the gap to enter on.

0/100

page quality · 19 products

Sponsored placement74%
New entrants (1y)1· 1 succeeded
Avg rating4.6★
Avg reviews5,767

Top Mouthwash products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 56% of clicks — established leaders, but buyers still shop beyond them.

£0£133K£267K£400K£534K101001K10K100K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

7 falling

Sellers

95

Top-5 brand share

94%

Top 20: 100%

Top-5 click share

56%

Top 20: 100%

Open market

3%

  • Listerine65%
  • Corsodyl9%
  • Colgate9%
  • The Breath Co.7%
  • HISMILE4%
  • Dentyl3%
  • Open — no brand owns it (1 brand, 3%)

Mouthwash demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume2.0MCVR21.5%Products19Brands7Top 5 Brands94%OOS Rate0.0%Rating4.6★Reviews5,767Avg BSR#22
45K35KSpike '24Prime Day '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

Top Mouthwash search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • mouthwash1.1M/yr
  • listerine mouthwash325K/yr
  • mouth wash168K/yr
  • listerine102K/yr
  • oral b mouthwash31K/yr
  • alcohol free mouthwash34K/yr
  • mouthwash alcohol free30K/yr
  • mouthwash listerine26K/yr
  • mouthwashes40K/yr
  • listerine total care mouthwash18K/yr

What reviews say buyers love and hate about Mouthwash

What buyers mention most, as a share of all reviews.

What buyers love

79% of reviews
Oral Hygiene23%

Good for gum health and price great

Value For Money11%

Great value for money

Taste-Overall8%

Long lasting taste

Quality-Overall8%

Excellent product

Advertised Vs Actual Product6%

Product as advertised

What buyers complain about

55% of reviews
Taste-Overall22%

Strange taste

Oral Hygiene9%

a health hazard for anyone with a sensitive mouth

Value For Money8%

Bit expensive

Advertised Vs Actual Product4%

MISLEADING

Stain Resistance3%

Causes brown stains on teeth

Mouthwash return rate & reasons

Why buyers send it back, as a share of all return requests.

0.1%

Return rate

31%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Advertised Vs Actual Product
17%
2Taste-Overall
10%
3Leak-Proof
10%
4Functionality-Overall
9%
5Size-Overall
5%

Common Mouthwash questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Mouthwash 49/100 on Amazon United Kingdom — Skip it. The niche generates £1.3M/yr across 19 tracked products. 1 of 1 products launched in the last 360 days are still selling. Search demand moved -5.0% over the last 90 days.
Search demand for Mouthwash on Amazon United Kingdom is steady year-round — the busiest month runs 1.3× the quietest.