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retainer brush

Skip it

A small market ($55K/yr) — this niche doesn't clear our bar today.

Market size 14Growth 28Conversion 94Competition 18Returns 76Price range 67Avg price 31Brand share 37Review moat 65Quality gap 57

Conversion

Great11.8%

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

Returns

Great1.9%

return rate — above 5% kills the launch gate

Price range

Good$4.00–$37.48

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

Review moat

Good914.59

avg incumbent reviews — the moat a new listing must climb

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Brand share

Okay83%

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

Avg price

Okay$9.69

avg listing price — sweet spot $15–$100

Growth

Okay+2.0%

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

Competition

Bad78%

top-5 click share — a locked-up shelf

Market size

Bad$55K

$55K/yr · 48K searches

According to Flapen's Amazon United States niche tracking, retainer brush is a $55K/yr Amazon United States market (48K searches/yr). The top 5 brands hold 83% of demand. Verdict: Skip it — 43/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

retainer brush market data

Units sold / yr
5K–6K
avg 250–500/product
Revenue / yr
$48K–$58K
units × avg price
Conversion rate
11.8%
Avg BSR
#80
Page quality
0%
Prime
100%
Sponsored
76%
Out of stock
6.3%
Avg brand age
39 months
Avg seller age
152 days

Competition & brand share

The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.

Brands

15 rising

Sellers

36

Top-5 brand share

83%

Top 20: 100%

Top-5 click share

78%

Top 20: 100%

Open market

14%

  • GUM24%
  • BrightWorks23%
  • qiangXINGYai19%
  • Octuitey13%
  • Yeetandoo3%
  • ORAPICH3%
  • Open — no brand owns it (9 brands, 14%)

Demand

Weekly Amazon search volume, last 15 weeks — +2.0% search growth over the last 90 days.
1K600Apr '26Apr '26May '26May '26May '26Jun '26Jun '26Jul '26

Top retainer brush search terms

  • retainer brush23K/yr
  • invisalign brush7K/yr
  • retainer cleaner brush6K/yr
  • retainer cleaning brush5K/yr
  • retainer toothbrush4K/yr
  • retainer brush cleaner4K/yr
All search terms

Top retainer brush 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%$5K20%$11K30%$16K40%$22K1001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 17 tracked products in this niche — three views at once, no toggling.

What buyers say about retainer brush

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

What buyers love

Ease Of Cleaning21%

“Cleans Well”

Quality-Overall11%

“seems well made”

Ease Of Use10%

“Easy and gets job done”

Value For Money8%

“GOOD DEAL”

Efficiency8%

“that it is very effective”

Advertised Vs Actual Product6%

“Just what I wanted”

Brush Quality4%

“Soft bristles”

Durability3%

“Its easy to use and durable”

Soft Feel3%

“the bristles are soft”

Size-Overall2%

“Also its size is so perfect can fits everywhere”

What buyers complain about

Durability42%

“Didn't even last a year”

Ease Of Cleaning10%

“poor cleaning ability”

Functionality-Overall6%

“Not effective”

Quality-Overall6%

“Garbage Products”

Size-Overall4%

“Way too short”

Hard Feel3%

“If these were not so soft I would have given a higher review”

Value For Money2%

“Absolute Waste of Money”

Strength2%

“Not sturdy enough”

Smell1%

“the smell after a day or two was gross”

Advertised Vs Actual Product1%

“Does not work as advertised”

Top return reasons

Functionality-Overall26%
Size-Overall19%
Defective Material/Parts13%
Advertised Vs Actual Product9%
Durability5%
Ease Of Cleaning5%
Product Condition5%
Value For Money3%
Quality-Overall2%
Charging1%

Common questions

Is retainer brush profitable to sell on Amazon United States?
The niche generates $55K/yr across 17 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +2.0%. Flapen's verdict: Skip it (43/100).
How competitive is the retainer brush niche?
15 brands and 36 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 83% of demand.
What do buyers complain about in retainer brush?
Top complaints mined from reviews: Durability, Ease Of Cleaning, Functionality-Overall. The return rate is 1.9%.
What does it cost to enter the retainer brush niche?
Listings span $4.00–$37.48; the average listing price is $9.69 (sweet spot $15–$100). The average incumbent carries 915 reviews — the moat a new listing must climb.