---
title: "Liquid Soap Base — $105K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/baby-products/liquid-soap-base"
last_updated: "2026-08-09T16:12:55.070Z"
locale: en
meta:
description: "Niche score 54/100 · $105K/yr market · 43K searches/yr. A deep review moat (10,141 avg reviews) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · $105K/yr market · 43K searches/yr. A deep review moat (10,141 avg reviews) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Liquid Soap Base — $105K/yr Amazon US Niche (2026) - Flapen"
---
# **liquid soap base**
**Worth a look**
Shows low returns (0.6%), but a deep review moat (10,141 avg reviews) keeps it on the watch list.
Market size 26Growth 62Conversion 67Competition 54Returns 97Price range 87Avg price 95Brand share 41Review moat 22Quality gap 24
**Returns**
**Incredible****0.6%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$41.28**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.37–$65.13**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****6.0%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Good****+39.1%**
90-day search growth — must beat 0% to launch
**Competition**
**Good****52%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****81%**
top-5 brand share — brands hold most of the demand
**Market size**
**Okay****$105K**
$105K/yr · 43K searches
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Bad****10,140.83**
avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, liquid soap base is a $105K/yr Amazon United States market (43K searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Apr–May–Jun. Verdict: Worth a look — 54/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **liquid soap base market data**
- **Units sold / yr**
- **2K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$83K–$103K**
- units × avg price
- **Conversion rate**
- **6.0%**
- **Avg BSR**
- **#312**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.6%**
- **Avg brand age**
- **73 months**
- **Avg seller age**
- **131 days**
## **Competition & brand share**
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **—flat
**Sellers**
**33**
**Top-5 brand share**
**81%**
Top 20: 100%
**Top-5 click share**
**52%**
Top 20: 90%
**Open market**
**12%**
- Dr. Bronner's25% - WHOLENATURALS19% - FLOWHYET19% - WEBE10% - Yoken8% - Brittanie's Thyme7% - Open — no brand owns it (5 brands, 12%)
## **Demand & seasonality**
Weekly Amazon search volume, last 98 weeks — +39.1% search growth over the last 90 days.
2K1KSpike '25Prime Day '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Apr, May, Jun · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/baby-products/liquid-soap-base/trend)
## **Top liquid soap base search terms**
- **castile soap gallon**12K/yr+38.6%5.0% conv. - **castile laundry soap**5K/yr+151.0%1.3% conv. - **castile soap bulk**6K/yr+35.5%3.4% conv. - **castile soap liquid gallon**5K/yr+29.0%4.2% conv. - **dr bronners pure castile soap gallon**4K/yr+44.6%5.8% conv. - **gallon castile soap**5K/yr+0.4%5.2% conv. - **dr bronners gallon**4K/yr+12.3%6.9% conv. - **dr bronners 1 gallon**2K/yr+8.0%8.6% conv. - **dr bronners pure castile soap 1 gallon**1K/yr-10.7%13.1% conv. [**All search terms **](https://flapen.com/research/us/baby-products/liquid-soap-base/search-terms)
## **Top liquid soap base 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%$5K10%$11K15%$16K20%$21K101001K10K100K 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**WHOLENATURALS Pure Castile Soap Liquid EWG Verified & Certified Palm Oil Free Unscented Natural Mild & Gentle Non-gmo & Vegan - Organic Body Wash Laundry Pet/Dog and Baby Soap - 64 Fl Oz**WHOLENATURALS**$27.72**4.7★11,813 rev](https://www.amazon.com/dp/B08Y9691J6) [2**FLOWHYET EWG Verified 1Gallon Pure Castile Soap Liquid**FLOWHYET**$32.37**4.7★180 rev](https://www.amazon.com/dp/B0FS5ZW858) [3**WEBE Naturals Pure Unscented Castile Soap Refill 64 Oz | Face Body Wash Dishes Pets & Laundry**WEBE**$21.69**4.6★964 rev](https://www.amazon.com/dp/B0DN7MVRRL) [4**Dr. Bronners Pure-Castile Magic Soap Liquid (Peppermint 1 Gallon) Made with Regenerative Organic Certified Oils - For Face Hair Laundry Dishes- Hand Soaps & Body Wash**Dr. Bronner's**$64.76**4.8★70,444 rev](https://www.amazon.com/dp/B00028O80I) [5**Brittanies Pure Organic Castile Liquid Olive Oil Soap Refill 1 Gallon Unscented | Face Body Wash All Purpose Cleaner Dishes Pets Laundry | Vegan Biodegradable Made in USA**Brittanie's Thyme**$33.00**4.3★1,327 rev](https://www.amazon.com/dp/B08QLCRDM9)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**FLOWHYET Pure Castile Soap Liquid Unscented 1 Gallon for Dry Skin**FLOWHYET**$32.62**54 rev4mo ago](https://www.amazon.com/dp/B0GC5KWQF3) [**Ginger Lily Farms Botanicals Pure Castile Liquid Soap Refill Peppermint Scent 1 Gallon All-Purpose Cleaner for Body Face Hair Dishes Laundry & Pets Non-GMO 100% Vegan & Cruelty-Free**Ginger Lily Farms**$32.33**67 rev8mo ago](https://www.amazon.com/dp/B0G16R7JRP) [**FLOWHYET EWG Verified 1Gallon Pure Castile Soap Liquid**FLOWHYET**$32.37**180 rev8mo ago](https://www.amazon.com/dp/B0FS5ZW858) [**FLOWHYET EWG Verified Pure Castile Soap Liquid Unscented 1 Gallon Refill**FLOWHYET**$29.88**105 rev9mo ago](https://www.amazon.com/dp/B0FS58VN1L) [**EWG Verified 1 Gallon Pure Castile Soap Liquid Lavender Refill Oily Skin**FLOWHYET**$33.47**105 rev9mo ago](https://www.amazon.com/dp/B0FS5QH3N4)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**FLOWHYET Pure Castile Soap Liquid Unscented 1 Gallon for Dry Skin**FLOWHYET**$32.62**4.8★**▲ 169%**](https://www.amazon.com/dp/B0GC5KWQF3) [**EWG Verified 1 Gallon Pure Castile Soap Liquid Lavender Refill Oily Skin**FLOWHYET**$33.47**4.4★**▲ 116%**](https://www.amazon.com/dp/B0FS5QH3N4) [**FLOWHYET EWG Verified Pure Castile Soap Liquid Unscented 1 Gallon Refill**FLOWHYET**$29.88**4.4★**▲ 97%**](https://www.amazon.com/dp/B0FS58VN1L) [**FLOWHYET EWG Verified 1Gallon Pure Castile Soap Liquid**FLOWHYET**$32.37**4.7★**▲ 92%**](https://www.amazon.com/dp/B0FS5ZW858) [**Yoken Pure Castile Liquid Soap 64 Oz Unscent Body Hand Wash Dish with Pump**Yoken**$23.53**4.6★**▲ 62%**](https://www.amazon.com/dp/B0F9WVKXSF)
**~~View all trending →~~**
## **What buyers say about liquid soap base**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“Amazing quality”*
**Smell**14%
*“Fragrance free”*
**Cleansing**10%
*“Cleans skin good”*
**Ease Of Cleaning**8%
*“Great for cleaning”*
**Value For Money**8%
*“Great value”*
**Soft Feel**3%
*“Leaves skin soft”*
**Lather**3%
*“Great lasting lather”*
**Advertised Vs Actual Product**3%
*“Just as advertised”*
**Ingredients-Overall**3%
*“Clean Ingredients”*
**Ease Of Use**2%
*“Easy to use”*
### **What buyers complain about **
**Smell**15%
*“Smells rancid”*
**Dilute/Watery**12%
*“LIKE WATER”*
**Thickness**7%
*“liquid is thick”*
**Ease Of Cleaning**5%
*“Barely keep me clean”*
**Value For Money**5%
*“Price is a little high”*
**Advertised Vs Actual Product**3%
*“FALSE ADVERTISING”*
**Lather**3%
*“Unfortunately, this not only doesn't lather at all, it also does not clean your hands”*
**Leak-Proof**3%
*“Arrived Leaking”*
**Quality-Overall**3%
*“Poor quality control”*
**Moist/Dry**3%
*“Dr. Bronners has made me feel dry after using it on my skin in the past”*
### **Top return reasons **
**Leak-Proof**21%
**Size-Overall**17%
**Smell**16%
**Advertised Vs Actual Product**8%
**Value For Money**5%
**Dilute/Watery**4%
**Ingredients-Overall**3%
**Functionality-Overall**2%
**Defective Material/Parts**2%
**Moist/Dry**2%
## **Common questions**
- **Is liquid soap base profitable to sell on Amazon United States?**
- The niche generates $105K/yr across 29 tracked products. 5 of 7 products launched in the last 360 days are still selling. 90-day search growth is +39.1%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the liquid soap base niche?**
- 11 brands and 33 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 81% of demand.
- **What do buyers complain about in liquid soap base?**
- Top complaints mined from reviews: Smell, Dilute/Watery, Thickness. The return rate is 0.6%.
- **When does demand for liquid soap base peak?**
- Demand peaks in Apr–May–Jun; the busiest month runs 2.0× the quietest.
- **What does it cost to enter the liquid soap base niche?**
- Listings span $9.37–$65.13; the average listing price is $41.28 (sweet spot $15–$100). The average incumbent carries 10,141 reviews — the moat a new listing must climb.
## **Related niches in Baby Products**
- 65 [**baby car seat fan**](https://flapen.com/research/us/baby-products/baby-car-seat-fan)$31K/yr+151.9%**Worth a look**- 65 [**tummy time toys**](https://flapen.com/research/us/baby-products/tummy-time-toys)$11.8M/yr-9.5%**Worth a look**- 65 [**sunscreen brush**](https://flapen.com/research/us/baby-products/sunscreen-brush)$615K/yr+314.7%**Worth a look**- 65 [**toddler step stool**](https://flapen.com/research/us/baby-products/toddler-step-stool)$4.1M/yr-7.9%**Worth a look**- 65 [**training diapers 2t-3t**](https://flapen.com/research/us/baby-products/training-diapers-2t-3t)$6.1M/yr+8.7%**Launch it**- 65 [**water baby carrier**](https://flapen.com/research/us/baby-products/water-baby-carrier)$431K/yr+176.5%**Worth a look**[**All Baby Products niches **](https://flapen.com/research/us/baby-products)