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.

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.

Returns

Incredible0.6%

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

Good6.0%

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

Growth

Good+39.1%

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

Competition

Good52%

top-5 click share — leaders hold, buyers still browse

Brand share

Okay81%

top-5 brand share — brands hold most of the demand

Market size

Okay$105K

$105K/yr · 43K searches

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Review moat

Bad10,140.83

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

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

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.

Peak months: Apr, May, Jun · busiest ÷ quietest = 2.0×

Open Trend

Top liquid soap base search terms

castile soap gallon12K/yr +38.6%5.0% conv.
castile laundry soap5K/yr +151.0%1.3% conv.
castile soap bulk6K/yr +35.5%3.4% conv.
castile soap liquid gallon5K/yr +29.0%4.2% conv.
dr bronners pure castile soap gallon4K/yr +44.6%5.8% conv.
gallon castile soap5K/yr +0.4%5.2% conv.
dr bronners gallon4K/yr +12.3%6.9% conv.
dr bronners 1 gallon2K/yr +8.0%8.6% conv.
dr bronners pure castile soap 1 gallon1K/yr -10.7%13.1% conv.

All 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.

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

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$27.724.7★11,813 rev

FLOWHYET EWG Verified 1Gallon Pure Castile Soap Liquid

FLOWHYET$32.374.7★180 rev

WEBE Naturals Pure Unscented Castile Soap Refill 64 Oz | Face Body Wash Dishes Pets & Laundry

WEBE$21.694.6★964 rev

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$64.764.8★70,444 rev

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$33.004.3★1,327 rev

Newest

by launch date

FLOWHYET Pure Castile Soap Liquid Unscented 1 Gallon for Dry Skin

FLOWHYET$32.6254 rev

4mo ago

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$32.3367 rev

8mo ago

FLOWHYET EWG Verified 1Gallon Pure Castile Soap Liquid

FLOWHYET$32.37180 rev

8mo ago

FLOWHYET EWG Verified Pure Castile Soap Liquid Unscented 1 Gallon Refill

FLOWHYET$29.88105 rev

9mo ago

EWG Verified 1 Gallon Pure Castile Soap Liquid Lavender Refill Oily Skin

FLOWHYET$33.47105 rev

9mo ago

What buyers say about liquid soap base

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

What buyers love

Quality-Overall18%

“Amazing quality”

Smell14%

“Fragrance free”

Cleansing10%

“Cleans skin good”

Ease Of Cleaning8%

“Great for cleaning”

Value For Money8%

“Great value”

Soft Feel3%

“Leaves skin soft”

Lather3%

“Great lasting lather”

Advertised Vs Actual Product3%

“Just as advertised”

Ingredients-Overall3%

“Clean Ingredients”

Ease Of Use2%

“Easy to use”

What buyers complain about

Smell15%

“Smells rancid”

Dilute/Watery12%

“LIKE WATER”

Thickness7%

“liquid is thick”

Ease Of Cleaning5%

“Barely keep me clean”

Value For Money5%

“Price is a little high”

Advertised Vs Actual Product3%

“FALSE ADVERTISING”

Lather3%

“Unfortunately, this not only doesn't lather at all, it also does not clean your hands”

Leak-Proof3%

“Arrived Leaking”

Quality-Overall3%

“Poor quality control”

Moist/Dry3%

“Dr. Bronners has made me feel dry after using it on my skin in the past”

Top return reasons

Leak-Proof21%

Size-Overall17%

Smell16%

Advertised Vs Actual Product8%

Value For Money5%

Dilute/Watery4%