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opi infinite shine nail polish

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Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Market size 73Growth 20Conversion 22Competition 46Returns 69Price range 38Avg price 77Brand share 0Review moat 25Quality gap 67

Avg price

Great$94.08

avg listing price — sweet spot $15–$100

Market size

Good$814K

$814K/yr · 500K searches

Returns

Good2.3%

return rate — above 6% kills the launch gate

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Competition

Okay57%

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

Price range

Okay$15.10–$241.19

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

Review moat

Bad4,564.6

avg incumbent reviews — the moat a new listing must climb

Conversion

Bad1.7%

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

Growth

Bad-10.0%

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

Brand share

Bad100%

top-5 brand share — brand-locked demand

Competition

The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.

Brands

5 falling

Sellers

15

Top-5 brand share

100%

Open market

0%

  • OPI56%
  • iGel Beauty37%
  • O NAIL3%
  • SUNUV2%
  • JODSONE2%

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%$81K20%$163K30%$244K40%$326K101001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 20 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -10.0% search growth over the last 90 days.
30K20KPrime Day '24Spike '24Black Friday '24Holiday '24Spike '25Prime Day '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Sep, Nov, Dec · busiest ÷ quietest = 4.3×

Reviews

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

What buyers love

Quality-Overall18%

“Excellent Product”

Color17%

“Colors are pretty”

Value For Money14%

“Good value for money”

Ease Of Use9%

“Easy to remove as well”

Durability4%

“it reliable as ever”

Brightness/Shine/Glow4%

“The shine is long-lasting”

Efficiency3%

“The machine works great”

Advertised Vs Actual Product3%

“As described”

Size-Overall2%

“The size is convenient”

Moist/Dry2%

“actually dries quickly”

What buyers complain about

Size-Overall12%

“Too long”

Functionality-Overall10%

“Didn't work”

Durability9%

“Broke quickly”

Quality-Overall7%

“The quality seems cheap”

Value For Money6%

“Expensive”

Color5%

“Alot of colors are misleading”

Product Condition3%

“it was not new”

Moist/Dry3%

“Dont Dry”

Leak-Proof3%

“Bottles leaked”

Paint Quality2%

“These nail polishes are so small that you will only be able to paint your nail about twice with each bottle”

Top return reasons

Functionality-Overall22%
Size-Overall16%
Color10%
Advertised Vs Actual Product8%
Value For Money5%
Defective Material/Parts4%
Leak-Proof4%
Quality-Overall4%
Product Condition4%
Moist/Dry3%