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dark red nail polish

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A deep review moat (30,135 avg reviews) — this niche doesn't clear our bar today.

Market size 38Growth 20Conversion 56Competition 58Returns 96Price range 39Avg price 23Brand share 44Review moat 11Quality gap 60

Returns

Incredible0.9%

return rate — above 6% kills the launch gate

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Competition

Good50%

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

Conversion

Good4.7%

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

Brand share

Okay78%

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

Price range

Okay$1.07–$23.76

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

Market size

Okay$188K

$188K/yr · 477K searches

Avg price

Bad$8.40

avg listing price — sweet spot $15–$100

Growth

Bad-9.2%

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

Review moat

Bad30,134.69

avg incumbent reviews — the moat a new listing must climb

Competition

The top 5 products take 50% of clicks — established leaders, but buyers still shop beyond them.

Brands

14 rising

Sellers

64

Top-5 brand share

78%

Open market

18%

  • OPI32%
  • Sally Hansen26%
  • essie11%
  • OpenLive6%
  • GAOY4%
  • COSMOO4%

Product shelf

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%5%$9K10%$19K15%$28K20%$38K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 29 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -9.2% search growth over the last 90 days.
30K20KSpike '24Prime Day '25Spike '25SepDecMarJunAugNovMarMay

Peak months: Sep, Oct, Nov, Dec · busiest ÷ quietest = 4.2×

Reviews

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

What buyers love

Color59%

“Rich color”

Quality-Overall7%

“Really good nail polish”

Value For Money3%

“Worth for money”

Durability3%

“Its very durable”

Stitch/Finish/Polish3%

“Beautiful finish”

Moist/Dry2%

“Dries well too”

Advertised Vs Actual Product2%

“As described”

Coverage2%

“Good coverage”

Ease Of Application2%

“Easy to apply”

Brightness/Shine/Glow1%

“Very shine”

What buyers complain about

Color27%

“Very dark”

Moist/Dry12%

“Doesn't dry”

Quality-Overall9%

“Bad quality”

Thickness6%

“I wish the brush could be thicker as it is very thin”

Advertised Vs Actual Product6%

“It does not look like the picture”

Durability5%

“it falls apart the same day”

Paint Quality2%

“when painted on 1/2/3 coats it has a very brown undertone”

Value For Money2%

“not worth the money”

Adhesion/Stickiness2%

“it's very sticky”

Smell2%

“the odor is so intense”

Top return reasons

Color53%
Advertised Vs Actual Product9%
Functionality-Overall6%
Quality-Overall4%
Moist/Dry4%
Thickness3%
Paint Quality2%
Leak-Proof2%
Value For Money2%
Smell1%