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51

black gel nail polish

Worth a look

Shows low returns (0.9%), but prices mostly outside the sweet spot ($3.84–$16.40) keeps it on the watch list.

Market size 63Growth 23Conversion 95Competition 48Returns 96Price range 11Avg price 20Brand share 35Review moat 23Quality gap 52

Returns

Incredible0.9%

return rate — above 6% kills the launch gate

Conversion

Incredible12.3%

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

Market size

Good$584K

$584K/yr · 669K searches

Quality gap

Good4.4★

avg incumbent rating — lower means beatable quality

Competition

Okay56%

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

Brand share

Okay84%

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

Growth

Bad-5.0%

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

Review moat

Bad8,310.58

avg incumbent reviews — the moat a new listing must climb

Avg price

Bad$7.11

avg listing price — sweet spot $15–$100

Price range

Bad$3.84–$16.40

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

Competition

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

Brands

10 rising

Sellers

15

Top-5 brand share

84%

Open market

9%

  • beetles Gel Polish38%
  • GAOY16%
  • Double Rhythm12%
  • modelones10%
  • JODSONE8%
  • CANNI6%
  • Open — no brand owns it (4 brands, 9%)

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%10%$58K20%$117K30%$175K40%$234K1001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 19 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -5.0% search growth over the last 90 days.
23K18KSpike '24Spike '25Prime Day '25SepDecMarJunAugNovMarMay

Peak months: Sep, Oct · busiest ÷ quietest = 2.4×

Reviews

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

What buyers love

Color34%

“Beautiful colors”

Quality-Overall13%

“Good Quality”

Value For Money7%

“Worth your dollar”

Stitch/Finish/Polish5%

“gives a very professional finish”

Ease Of Application5%

“Easy Application”

Brightness/Shine/Glow3%

“It looks shiny and good”

Soft Feel3%

“smoothness that you want”

Coverage3%

“Excellent coverage”

Thickness3%

“The gel is thick enough for one coat”

Efficiency3%

“Works fine”

What buyers complain about

Thickness16%

“Too thick”

Moist/Dry13%

“The black does not dry well at all”

Quality-Overall12%

“secondly, the label on the bottle FALLS OFF which says right there, that it is low quality”

Color8%

“Very pigmented”

Allergies6%

“Allergic reaction”

Durability5%

“Does not last”

Adhesion/Stickiness5%

“Peels off like a sticker”

Paint Quality5%

“somehow had paint leaking out even though I cured it under the UV lamp correctly”

Value For Money2%

“Expensive”

Wrinkles2%

“Wrinkles and does not cure fully”

Top return reasons

Functionality-Overall17%
Color14%
Advertised Vs Actual Product9%
Thickness8%
Paint Quality5%
Leak-Proof5%
Moist/Dry5%
Quality-Overall5%
Texture/Consistency-Overall4%
Value For Money3%