---
title: "Rennora Hair Growth Serum — $210K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/rennora-hair-growth-serum"
last_updated: "2026-08-10T18:20:50.278Z"
locale: en
meta:
description: "Niche score 45/100 · $210K/yr market · 54K searches/yr · $46.52 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $210K/yr market · 54K searches/yr · $46.52 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Rennora Hair Growth Serum — $210K/yr Amazon US Niche (2026) - Flapen"
---
# **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**
**Incredible****0.6%**
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**
**Great****297.5**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Great****8.3%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.3★**
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**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
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 ~~](https://flapen.com/research/methodology)
## **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 '26 seasonNovDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Feb, Mar · busiest ÷ quietest = 2.4×
[**Open Trend **](https://flapen.com/research/us/beauty-personal-care/rennora-hair-growth-serum/trend)
## **Top rennora hair growth serum search terms**
- **rennora hair growth serum for black women**33K/yr-69.6%6.9% conv. - **rennora hair growth serum for black men**14K/yr+2.7%8.6% conv. - **renora hair growth serum for black men**8K/yr-56.7%7.5% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/rennora-hair-growth-serum/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 moatMarket 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.
### **Top sellers**
by 90-day click share
[1**Rennora Hair Growth Serum with Organic Herbs and Natural Vitamins Peppermint Oil Stinging Nettle and Rosemary Oil No Chemicals Formulated for Hair Regrowth (2 Pack - 60 Day Supply)**RENNORA BEAUTY**$48.24**4.0★396 rev](https://www.amazon.com/dp/B0DF3VK7FV) [2**Rennora Hair Growth Serum with Organic Herbs and Natural Vitamins Peppermint Oil Stinging Nettle and Rosemary Oil No Chemicals Formulated for Hair Regrowth (1 Pack - 30 Day Supply)**RENNORA BEAUTY**$28.36**4.0★396 rev](https://www.amazon.com/dp/B0F498WMXR) [3**Rennora Extra-Strength Hair Growth Serum with Organic Herbs and Natural Vitamins Rosemary Oil Castor Oil Black Seed Amla and Ginseng No Chemicals Formulated for Fast Hair Regrowth**RENNORA BEAUTY**$37.46**5.0★2 rev](https://www.amazon.com/dp/B0FXWFM5HF) [4**Rennora Hair Growth Serum with Organic Herbs and Natural Vitamins Peppermint Oil Stinging Nettle and Rosemary Oil No Chemicals Formulated for Hair Regrowth (4 Pack - 120 Day Supply)**RENNORA BEAUTY**$72.00**4.0★396 rev](https://www.amazon.com/dp/B0DF3RYH9Z)
### **Newest**
by launch date
[**Rennora Extra-Strength Hair Growth Serum with Organic Herbs and Natural Vitamins Rosemary Oil Castor Oil Black Seed Amla and Ginseng No Chemicals Formulated for Fast Hair Regrowth**RENNORA BEAUTY**$37.46**2 rev8mo ago](https://www.amazon.com/dp/B0FXWFM5HF) [**Rennora Hair Growth Serum with Organic Herbs and Natural Vitamins Peppermint Oil Stinging Nettle and Rosemary Oil No Chemicals Formulated for Hair Regrowth (1 Pack - 30 Day Supply)**RENNORA BEAUTY**$28.36**396 rev1y ago](https://www.amazon.com/dp/B0F498WMXR) [**Rennora Hair Growth Serum with Organic Herbs and Natural Vitamins Peppermint Oil Stinging Nettle and Rosemary Oil No Chemicals Formulated for Hair Regrowth (2 Pack - 60 Day Supply)**RENNORA BEAUTY**$48.24**396 rev1y ago](https://www.amazon.com/dp/B0DF3VK7FV) [**Rennora Hair Growth Serum with Organic Herbs and Natural Vitamins Peppermint Oil Stinging Nettle and Rosemary Oil No Chemicals Formulated for Hair Regrowth (4 Pack - 120 Day Supply)**RENNORA BEAUTY**$72.00**396 rev1y ago](https://www.amazon.com/dp/B0DF3RYH9Z)
### **Trending**
90-day click momentum
[**Rennora Extra-Strength Hair Growth Serum with Organic Herbs and Natural Vitamins Rosemary Oil Castor Oil Black Seed Amla and Ginseng No Chemicals Formulated for Fast Hair Regrowth**RENNORA BEAUTY**$37.46**5.0★**▲ 157%**](https://www.amazon.com/dp/B0FXWFM5HF) [**Rennora Hair Growth Serum with Organic Herbs and Natural Vitamins Peppermint Oil Stinging Nettle and Rosemary Oil No Chemicals Formulated for Hair Regrowth (4 Pack - 120 Day Supply)**RENNORA BEAUTY**$72.00**4.0★**— 7%**](https://www.amazon.com/dp/B0DF3RYH9Z) [**Rennora Hair Growth Serum with Organic Herbs and Natural Vitamins Peppermint Oil Stinging Nettle and Rosemary Oil No Chemicals Formulated for Hair Regrowth (1 Pack - 30 Day Supply)**RENNORA BEAUTY**$28.36**4.0★**— 5%**](https://www.amazon.com/dp/B0F498WMXR) [**Rennora Hair Growth Serum with Organic Herbs and Natural Vitamins Peppermint Oil Stinging Nettle and Rosemary Oil No Chemicals Formulated for Hair Regrowth (2 Pack - 60 Day Supply)**RENNORA BEAUTY**$48.24**4.0★**▼ 14%**](https://www.amazon.com/dp/B0DF3VK7FV)
## **What buyers say about rennora hair growth serum**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Hair Growth**45%
*“The Rennora Hair Growth really works”*
**Quality-Overall**19%
*“Great product”*
**Advertised Vs Actual Product**9%
*“Yes it met my expectations”*
**Smell**7%
*“I like smell”*
**Allergies**3%
*“My scalp is less itchy with Rennora hair growth”*
**Efficiency**3%
*“Its working”*
**Instructions/User Manual/Troubleshooting**3%
*“Follow the directions”*
**Soft Feel**2%
*“It feels great on the scalp, very soothing and refreshing on my edges”*
**Moist/Dry**2%
*“The moisture of my hair”*
**Hair Styling**2%
*“Hair care”*
### **What buyers complain about **
**Functionality-Overall**40%
*“It does not work”*
**Value For Money**13%
*“MONEY WASTED”*
**Quality-Overall**7%
*“Garbage”*
**Hair Related**7%
*“Product did not work for me so its obviously only for some hair loss conditions”*
**Smell**7%
*“I can say that I could smell it before completely opening the bag it was delivered in”*
**Thickness**7%
*“It has grew in some of the spots that was becoming thin”*
**Size-Overall**3%
*“too small amount”*
**Advertised Vs Actual Product**3%
*“Doesnt work as advertised”*
**Texture/Consistency-Overall**3%
*“Product is no longer the same consistency”*
**Symptom Reduction**3%
*“I have used consistently have not seen any change”*
### **Top return reasons **
**Smell**20%
**Functionality-Overall**18%
**Advertised Vs Actual Product**16%
**Leak-Proof**8%
**Damage/Burn Hair**8%
**Oily/Greasy**4%
**Defective Material/Parts**3%
**Size-Overall**3%
**Color Fading/Discoloration**3%
**Suitability Short Hair**2%
## **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.
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