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rennora hair growth serum

Skip it

Soft demand (-57.5% this quarter) — this niche doesn't clear our bar today.

Market size 41Growth 0Conversion 80Competition 0Returns 97Price range 95Avg price 94Brand share 0Review moat 85Quality gap 78

Returns

Incredible0.6%

return rate — above 5% kills the launch gate

Price range

Incredible$28.36–$72.00

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

Avg price

Great$46.52

avg listing price — sweet spot $15–$100

Review moat

Great297.5

avg incumbent reviews — the moat a new listing must climb

Conversion

Great8.3%

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

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Market size

Okay$210K

$210K/yr · 54K searches

Growth

Bad-57.5%

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

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, rennora hair growth serum is a $210K/yr Amazon United States market (54K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Feb–Mar. Verdict: Skip it — 45/100.

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

rennora hair growth serum market data

Units sold / yr
3K–4K
avg 750–1,000/product
Revenue / yr
$140K–$186K
units × avg price
Conversion rate
8.3%
Avg BSR
#216
Page quality
0%
Prime
100%
Sponsored
100%
Out of stock
0.0%
Avg brand age
37 months
Avg seller age
135 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

1 falling

Sellers

68

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

0%

  • RENNORA BEAUTY100%

Demand & seasonality

Weekly Amazon search volume, last 92 weeks — -57.5% search growth over the last 90 days.
3K2KBlack Friday '24Holiday '24Spike '25Spike '26NovDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Feb, Mar · busiest ÷ quietest = 2.4×

Top rennora hair growth serum search terms

  • rennora hair growth serum for black women33K/yr
  • rennora hair growth serum for black men14K/yr
  • renora hair growth serum for black men8K/yr
All search terms

Top rennora hair growth serum 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%15%$31K30%$63K45%$94K60%$126K1101001K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 4 tracked products in this niche — three views at once, no toggling.

What buyers say about rennora hair growth serum

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

What buyers love

Hair Growth45%

“The Rennora Hair Growth really works”

Quality-Overall19%

“Great product”

Advertised Vs Actual Product9%

“Yes it met my expectations”

Smell7%

“I like smell”

Allergies3%

“My scalp is less itchy with Rennora hair growth”

Efficiency3%

“Its working”

Instructions/User Manual/Troubleshooting3%

“Follow the directions”

Soft Feel2%

“It feels great on the scalp, very soothing and refreshing on my edges”

Moist/Dry2%

“The moisture of my hair”

Hair Styling2%

“Hair care”

What buyers complain about

Functionality-Overall40%

“It does not work”

Value For Money13%

“MONEY WASTED”

Quality-Overall7%

“Garbage”

Hair Related7%

“Product did not work for me so its obviously only for some hair loss conditions”

Smell7%

“I can say that I could smell it before completely opening the bag it was delivered in”

Thickness7%

“It has grew in some of the spots that was becoming thin”

Size-Overall3%

“too small amount”

Advertised Vs Actual Product3%

“Doesnt work as advertised”

Texture/Consistency-Overall3%

“Product is no longer the same consistency”

Symptom Reduction3%

“I have used consistently have not seen any change”

Top return reasons

Smell20%
Functionality-Overall18%
Advertised Vs Actual Product16%
Leak-Proof8%
Damage/Burn Hair8%
Oily/Greasy4%
Defective Material/Parts3%
Size-Overall3%
Color Fading/Discoloration3%
Suitability Short Hair2%

Common questions

Is rennora hair growth serum profitable to sell on Amazon United States?
The niche generates $210K/yr across 4 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -57.5%. Flapen's verdict: Skip it (45/100).
How competitive is the rennora hair growth serum niche?
1 brands and 68 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in rennora hair growth serum?
Top complaints mined from reviews: Functionality-Overall, Value For Money, Quality-Overall. The return rate is 0.6%.
When does demand for rennora hair growth serum peak?
Demand peaks in Feb–Mar; the busiest month runs 2.4× the quietest.
What does it cost to enter the rennora hair growth serum niche?
Listings span $28.36–$72.00; the average listing price is $46.52 (sweet spot $15–$100). The average incumbent carries 298 reviews — the moat a new listing must climb.