Is kids mouthwash profitable to sell on Amazon United Kingdom?

The niche generates £56K/yr across 13 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +20.0%. Flapen's verdict: Skip it (38/100).

How competitive is the kids mouthwash niche?

9 brands and 43 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 91% of demand.

What do buyers complain about in kids mouthwash?

Top complaints mined from reviews: Taste-Overall, Oral Hygiene, Value For Money. The return rate is 0.1%.

What does it cost to enter the kids mouthwash niche?

Listings span £1.31–£14.66; the average listing price is £4.79 (sweet spot $15–$100). The average incumbent carries 1,954 reviews — the moat a new listing must climb.

kids mouthwash

Skip it

Prices mostly outside the sweet spot ($1.31–$14.66) — this niche doesn't clear our bar today.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Great8.3%

search→purchase rate — share of searches ending in a sale

Growth

Okay+20.0%

90-day search growth — must beat 0% to launch

Review moat

Okay1,953.92

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Brand share

Bad91%

top-5 brand share — brand-locked demand

Competition

Bad76%

top-5 click share — a locked-up shelf

Market size

Bad£56K

£56K/yr · 141K searches

Avg price

Bad£4.79

avg listing price — sweet spot $15–$100

Price range

Bad£1.31–£14.66

cheapest to priciest tracked listing — scored on the share inside $15–$100

According to Flapen's Amazon United Kingdom niche tracking, kids mouthwash is a £56K/yr Amazon United Kingdom market (141K searches/yr). The top 5 brands hold 91% of demand. Verdict: Skip it — 38/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

kids mouthwash market data

Units sold / yr: 20K–25K; avg 2,000–2,500/product
Revenue / yr: £96K–£120K; units × avg price
Conversion rate: 8.3%
Avg BSR: #87
Page quality: 0%
Prime: 92%
Sponsored: 92%
Out of stock: 0.0%
Avg brand age: 64 months
Avg seller age: 179 days

Competition & brand share

The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 rising

Sellers

Top-5 brand share

91%

Top 20: 100%

Top-5 click share

76%

Top 20: 100%

Open market

Aquafresh34%
Listerine33%
Dentyl14%
CLARISMILE PARIS5%
ACT5%
SENSODYNE PRONAMEL4%
Open — no brand owns it (3 brands, 5%)

Demand

Weekly Amazon search volume, last 36 weeks — +20.0% search growth over the last 90 days.

Open Trend

Top kids mouthwash search terms

kids mouthwash80K/yr +21.2%2.7% conv.
mouthwash kids9K/yr +50.5%2.9% conv.
kids mouthwash 6-88K/yr -1.9%3.3% conv.
kids mouthwash 9-126K/yr +19.6%3.1% conv.
childrens mouthwash6K/yr +12.6%3.0% conv.
listerine kids mouthwash4K/yr +49.8%0.9% conv.
kids mouth wash5K/yr +23.7%3.7% conv.
listerine smart rinse kids4K/yr +33.6%0.7% conv.
kids mouthwash 3-5 years4K/yr -10.5%2.0% conv.
mouthwash for kids5K/yr -6.5%2.7% conv.

All search terms

Top kids 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 13 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Aquafresh Mouthwash for Kids Big Teeth Mouthwash for Children 6-8 Years Fruity Flavour 300 ml

Aquafresh£1.314.6★763 rev

Listerine Smart Rinse Mild Mint Mouthwash (500ml) Kids Alcohol-Free Mouthwash to Reduce Cavities Bad Bacteria and Cleaning Teeth Gums and Tongue Sugar-Free Formula

Listerine£2.484.7★3,192 rev

Dentyl Dual Action CPC Mouthwash 12hrs Fresh Breath & Total Care Alcohol Free Unicorn Edition Mystical Mint 500 ml

Dentyl£2.734.4★325 rev

Listerine Total Care Mild Taste (Alcohol Free) Antibacterial Mouthwash (500ml) Fresh Mint Flavour with 6-in-1 Benefits Helps Reduce Plaque and Freshens Breath

Listerine£1.954.6★5,136 rev

Listerine Smart Rinse Mild Berry Mouthwash (1x 500ml) Kids Mouthwash to Reduce Cavities Bad Bacteria and Cleaning Teeth Gums and Tongue Sugar-and Alcohol-Free Formula

Listerine£2.604.7★3,192 rev

Newest

by launch date

Clarismile Kids Oral Spray Fluoride-Free Dental Spray for Children Hydroxyapatite & Xylitol Enamel Support Strawberry Flavor 30ml

CLARISMILE PARIS£14.6641 rev

4mo ago

Grin Ultra Clean Kids Dental Floss Sticks Fruity Floss Picks with Peach Flavour - Fluoride Free Gentle on Tight Teeth - 100% Recycled Convenient Handle for Daily Oral Care - 80pk Canister

Grin£4.7014 rev

7mo ago

Sensodyne Pronamel Junior 6-12 Years Toothpaste for Juniors 2X Stronger Enamel Defence* Bubble Mint Flavour 50 ml *Protection from Sugar acids vs Your Mouths Natural defences.

SENSODYNE PRONAMEL£1.62736 rev

1y ago

Kids Mouthwash Bundle which Contains Aquafresh Mouthwash Kids Big Teeth 6-8 Years 300ml - Pack of 2 with Grocery List Card

Think Outside the Gift£8.117 rev

2y ago

BURST Kids Flossers (90 Count/1 Pack) | Strawberry Aroma | Toddler Dental Flossable Picks with Ergonomic Design | No-Slip Grip | Smiley Face and Fun Colors

Burst£3.03679 rev

3y ago

What buyers say about kids mouthwash

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

What buyers love

Taste-Overall20%

“Very mild taste”

Oral Hygiene19%

“Cleans teeth well”

Value For Money12%

“Good deal”

Flavor10%

“Good flavor”

Quality-Overall6%

“theres no complaints”

Cleansing4%

“Well, it definitely cleans your mouth,”

Freshness4%

“Clean and fresh”

Advertised Vs Actual Product4%

“it does what it says”

Tooth Sensitivity2%

“Really does protect your teeth”

Strength2%

“It's very strong”

What buyers complain about

Taste-Overall29%

“mild in taste”

Oral Hygiene14%

“Awful, didnt realise Id picked up this one, Ill stick to the normal Dentyl mouthwash in future”

Value For Money7%

“sometimes expensive”

Smell3%

“Although the smell from the bottle,be that just the ingredients etc smelt like someone outside was painting with creosote🤧”

Size-Overall3%

“small”

Ease Of Use3%

“I cannot use it”

Pain Relief-Overall2%

“left my mouth in pain for an hour afterward”

Strength2%

“Nice and not strong”

Sweetness2%

“Sickly sweet - unpleasant”

Tooth Sensitivity2%

“not sure it works on his sensitive tooth”

Top return reasons

Taste-Overall18%

Age Suitability14%

Leak-Proof10%

Flavor8%

Advertised Vs Actual Product7%

Quality-Overall6%

Color6%

Smell5%

Pain Relief-Overall4%

Value For Money4%

Common questions

Is kids mouthwash profitable to sell on Amazon United Kingdom?: The niche generates £56K/yr across 13 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +20.0%. Flapen's verdict: Skip it (38/100).
How competitive is the kids mouthwash niche?: 9 brands and 43 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 91% of demand.
What do buyers complain about in kids mouthwash?: Top complaints mined from reviews: Taste-Overall, Oral Hygiene, Value For Money. The return rate is 0.1%.
What does it cost to enter the kids mouthwash niche?: Listings span £1.31–£14.66; the average listing price is £4.79 (sweet spot $15–$100). The average incumbent carries 1,954 reviews — the moat a new listing must climb.