---
title: "Castor Oil Shampoo — $134K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/castor-oil-shampoo"
last_updated: "2026-08-10T17:41:06.334Z"
locale: en
meta:
description: "Niche score 53/100 · $134K/yr market · 90K searches/yr · $17.59 avg price. Soft demand (-4.7% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · $134K/yr market · 90K searches/yr · $17.59 avg price. Soft demand (-4.7% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Castor Oil Shampoo — $134K/yr Amazon US Niche (2026) - Flapen"
---
# **castor oil shampoo**
**Worth a look**
Shows low returns (0.8%), but soft demand (-4.7% this quarter) keeps it on the watch list.
Market size 30Growth 23Conversion 81Competition 56Returns 96Price range 63Avg price 81Brand share 45Review moat 23Quality gap 62
**Returns**
**Incredible****0.8%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****8.5%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$17.59**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$6.90–$28.93**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Competition**
**Good****51%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****78%**
top-5 brand share — brands hold most of the demand
**Market size**
**Okay****$134K**
$134K/yr · 90K searches
**Growth**
**Bad****-4.7%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****7,938.24**
avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, castor oil shampoo is a $134K/yr Amazon United States market (90K searches/yr). The top 5 brands hold 78% of demand. Demand peaks in Sep. Verdict: Worth a look — 53/100.
Data updated Jul 14, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **castor oil shampoo market data**
- **Units sold / yr**
- **6K–8K**
- avg 100–250/product
- **Revenue / yr**
- **$106K–$141K**
- units × avg price
- **Conversion rate**
- **8.5%**
- **Avg BSR**
- **#995**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **72%**
- **Out of stock**
- **3.5%**
- **Avg brand age**
- **56 months**
- **Avg seller age**
- **134 days**
## **Competition & brand share**
The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**13 **▼falling
**Sellers**
**637**
**Top-5 brand share**
**78%**
Top 20: 100%
**Top-5 click share**
**51%**
Top 20: 94%
**Open market**
**15%**
- First Botany39% - Shea Moisture13% - INFINA ESSENTIALS11% - Difeel8% - BELLISSO7% - GIOVANNI7% - Open — no brand owns it (7 brands, 15%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -4.7% search growth over the last 90 days.
7K5KSpike '24Black Friday '24Holiday '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Sep · busiest ÷ quietest = 2.8×
[**Open Trend **](https://flapen.com/research/us/beauty-personal-care/castor-oil-shampoo/trend)
## **Top castor oil shampoo search terms**
- **castor oil shampoo**59K/yr+1.9%6.3% conv. - **first botany shampoo**5K/yr-17.8%9.9% conv. - **castor oil shampoo for hair growth**8K/yr-26.0%5.9% conv. - **first botany**5K/yr+4.3%3.7% conv. - **castor shampoo**5K/yr-11.9%5.2% conv. - **shampoo castor oil**4K/yr-19.8%6.2% conv. - **first botany shampoo and conditioner**4K/yr-29.5%10.2% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/castor-oil-shampoo/search-terms)
## **Top castor oil shampoo 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%5%$7K10%$13K15%$20K20%$27K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Castor Oil Shampoo - An Anti Hair Loss Shampoo Thickening formula For Hair Regrowth Anti Thinning Sulfate Free For Men & Women Anti Dandruff Treatment 16 fl oz**First Botany**$15.50**4.2★287 rev](https://www.amazon.com/dp/B0DQ8BMLS2) [2**Castor Oil Shampoo and Conditioner Set for Hair Growth with Rosemary & Peppermint Oil - Cleanse Hair Strengthen & Shine with Castor Shampoo and Conditioner - Anti-Hair Loss for Men & Women - 16 fl oz**INFINA ESSENTIALS**$28.93**4.5★1,089 rev](https://www.amazon.com/dp/B0CMFWC2MB) [3**Castor Oil Shampoo and Conditioner Set - Thickening Products for Thinning Hair Women and Men - Sulfate Free Formula - Hydrating Volumizing and Moisturizing for Dry Hair - Volume Boosting Color Safe**BELLISSO**$23.90**4.3★46,563 rev](https://www.amazon.com/dp/B0DVQHBBBK) [4**GIOVANNI Smoothing Castor Oil Shampoo - All Hair Types Moisturize Hair & Scalp Hydrate & Tame Frizz Jojoba Argan Oil Coconut Oil Shea Butter Keratin - 13.5 oz**GIOVANNI**$13.54**4.5★2,434 rev](https://www.amazon.com/dp/B09BGH8C13) [5**SheaMoisture Strengthen and Restore Shampoo Pure Jamaican Black Castor Oil for Damaged Hair To Cleanse and Nourish Hair 13 fl oz**Shea Moisture**$8.07**4.6★19,822 rev](https://www.amazon.com/dp/B01LFQYXBO)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**HerStyler Castor Oil Shampoo with Rosemary - Cooling Mint Scalp Detox**HerStyler**$14.53**28 rev3mo ago](https://www.amazon.com/dp/B0GW2SFNXG) [**Kitsch Smoothing Castor Oil Liquid Shampoo Nourishing Hair Shampoo for Women & Men Smooths Dry Damaged & Frizzy Hair Clean Bio-Based Color-Safe Hair Care Made in USA 12.3 oz**Kitsch**$12.55**1,955 rev9mo ago](https://www.amazon.com/dp/B0FWFDQ3HD) [**Castor Oil Shampoo and Conditioner Set - Thickening Products for Thinning Hair Women and Men - Sulfate Free Formula - Hydrating Volumizing and Moisturizing for Dry Hair - Volume Boosting Color Safe**BELLISSO**$23.90**46,563 rev1y ago](https://www.amazon.com/dp/B0DVQHBBBK) [**Renpure Moringa & Castor Shampoo Plant-Based - Curl Enhancing - For Moisturized Manageable & Smooth Curls - With Castor & Moringa Seed Oil - For Wavy To Curly Hair - 24 Fl Oz**RENPURE**$6.90**4,990 rev1y ago](https://www.amazon.com/dp/B0DT4Y2PH4) [**Castor Oil Shampoo - An Anti Hair Loss Shampoo Thickening formula For Hair Regrowth Anti Thinning Sulfate Free For Men & Women Anti Dandruff Treatment 16 fl oz**First Botany**$15.50**287 rev1y ago](https://www.amazon.com/dp/B0DQ8BMLS2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**HerStyler Castor Oil Shampoo with Rosemary - Cooling Mint Scalp Detox**HerStyler**$14.53**4.6★**▲ 376%**](https://www.amazon.com/dp/B0GW2SFNXG) [**Kitsch Smoothing Castor Oil Liquid Shampoo Nourishing Hair Shampoo for Women & Men Smooths Dry Damaged & Frizzy Hair Clean Bio-Based Color-Safe Hair Care Made in USA 12.3 oz**Kitsch**$12.55**4.4★**▲ 215%**](https://www.amazon.com/dp/B0FWFDQ3HD) [**OKAY Black Jamaican Castor Oil Shampoo - Jamaican Castor Shampoo for Hair Growth Natural Moisturizing Shampoo to Strengthen & Restore Damaged Hair for Women and Men - 33 Oz**OKAY**$28.84**4.5★**▲ 121%**](https://www.amazon.com/dp/B073RJP5DX) [**Shea Moisture Strengthen and Restore Shampoo Jamaican Black Castor Oil for Damaged Hair Sulfate-Free 24 Fl oz**Shea Moisture**$15.00**4.6★**▲ 69%**](https://www.amazon.com/dp/B0BHZPGH4P) [**Castor Tea Tree Shampoo Conditioner - An Anti Hair Loss Set Thickening formula For Hair Regrowth Anti Thinning Sulfate Free For Men & Women Anti Dandruff Treatment - 16 oz**First Botany**$23.44**4.4★**▲ 67%**](https://www.amazon.com/dp/B0FC16XHV4)
**~~View all trending →~~**
## **What buyers say about castor oil shampoo**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Smell**23%
*“Nicely scented”*
**Quality-Overall**12%
*“Decent quality”*
**Hair Growth**10%
*“Helps your hair grow”*
**Soft Feel**9%
*“And my hair feels soft”*
**Cleansing**6%
*“It cleans well”*
**Moist/Dry**4%
*“Súper hydrating”*
**Value For Money**3%
*“Worth the price”*
**Lather**3%
*“It lathers up easy”*
**Suitability Straight Hair**3%
*“Works very well on my hair”*
**Advertised Vs Actual Product**2%
*“does what it says it does”*
### **What buyers complain about **
**Smell**15%
*“The smell is disgusting”*
**Hair Related**8%
*“I can barely get a comb or brush through my hair”*
**Moist/Dry**7%
*“Not hydrating enough”*
**Allergies**7%
*“Had severe allergic reaction”*
**Functionality-Overall**4%
*“This time to pump doesn't work”*
**Oily/Greasy**4%
*“Makes hair extremely oily”*
**Damage/Burn Hair**3%
*“Makes your hair fall out”*
**Ease Of Use**3%
*“Hard to open”*
**Thickness**3%
*“It is not thick like a creamy lotion”*
**Ease Of Cleaning**3%
*“it won't be able to clean your hair”*
### **Top return reasons **
**Smell**17%
**Leak-Proof**15%
**Suitability Short Hair**7%
**Advertised Vs Actual Product**7%
**Moist/Dry**6%
**Motor Power**5%
**Size-Overall**5%
**Damage/Burn Hair**5%
**Oily/Greasy**4%
**Functionality-Overall**4%
## **Common questions**
- **Is castor oil shampoo profitable to sell on Amazon United States?**
- The niche generates $134K/yr across 25 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -4.7%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the castor oil shampoo niche?**
- 13 brands and 637 sellers compete. The top 5 products take 51% of clicks and top 5 brands hold 78% of demand.
- **What do buyers complain about in castor oil shampoo?**
- Top complaints mined from reviews: Smell, Hair Related, Moist/Dry. The return rate is 0.8%.
- **When does demand for castor oil shampoo peak?**
- Demand peaks in Sep; the busiest month runs 2.8× the quietest.
- **What does it cost to enter the castor oil shampoo niche?**
- Listings span $6.90–$28.93; the average listing price is $17.59 (sweet spot $15–$100). The average incumbent carries 7,938 reviews — the moat a new listing must climb.
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