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27

opi got the blues for red 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 3Growth 20Conversion 20Competition 14Returns 100Price range 58Avg price 54Brand share 0Review moat 0Quality gap 33

Returns

Incredible0.0%

return rate — above 6% kills the launch gate

Price range

Good$8.68–$23.76

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

Avg price

Good$12.50

avg listing price — sweet spot $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Bad-10.8%

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

Conversion

Bad1.6%

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

Competition

Bad83%

top-5 click share — a locked-up shelf

Market size

Bad$13K

$13K/yr · 63K searches

Brand share

Bad100%

top-5 brand share — brand-locked demand

Review moat

Bad57,610.6

avg incumbent reviews — the moat a new listing must climb

Competition

The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.

Brands

2 rising

Sellers

31

Top-5 brand share

100%

Open market

0%

  • OPI97%
  • essie3%
  • Open — no brand owns it (0%)

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%$1K20%$3K30%$4K40%$5K1001K10K100K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 10 tracked products in this niche — three views at once, no toggling.

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -10.8% search growth over the last 90 days.
3K2KPrime Day '24Spike '24Spike '25Prime Day '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Sep, Oct, Nov, Dec · busiest ÷ quietest = 4.7×

Reviews

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

What buyers love

Color64%

“Gorgeous shade”

Durability8%

“Its very durable”

Quality-Overall5%

“Really good nail polish”

Stitch/Finish/Polish3%

“Great polish”

Moist/Dry2%

“This quick dry formula goes on smooth”

Brightness/Shine/Glow2%

“I also love how shiny”

Shape/Style1%

“The brush is perfectly shaped and it really is one coat and done”

Value For Money1%

“worth every penny”

Texture/Consistency-Overall1%

“has a great consistency”

Coverage1%

“Great coverage, it's not thick at all, and one coat is enough for a full glam”

What buyers complain about

Color24%

“Wrong color”

Moist/Dry13%

“Takes a bit to fully dry”

Thickness10%

“Dries thick on brush”

Durability10%

“Began chipping off within a day”

Quality-Overall9%

“Bad quality”

Product Condition4%

“Im disappointed that the product wasnt new”

Material Quality3%

“Used material”

Value For Money3%

“Kind of expensive”

Adhesion/Stickiness2%

“the brush was not properly adhered to the top”

Advertised Vs Actual Product2%

“color descriptions not appear to be accurate”