Caustic Soda
Caustic Soda shows low returns (0.1%), but a concentrated shelf (top 5 take 83% of clicks) keeps it on the watch list.
Flapen Score
Is Caustic Soda profitable on Amazon?
According to Flapen's Amazon United Kingdom niche tracking, Caustic Soda is a £366K/yr Amazon United Kingdom market (229K searches/yr). The top 5 brands hold 90% of demand. Verdict: Worth a look — 51/100.
Caustic Soda: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Worth a look. Search demand moved -4.8% over the last 90 days and 13.9% of searches end in a purchase.
£366K
revenue / yr
Who owns the niche?
The top 5 brands hold 90% of demand, so 10% of the market is open.
10%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.4★ — the gap to enter on.
0/100
page quality · 12 products
Top Caustic Soda products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
Powerful Caustic Soda Drain Cleaner | Effective Clog Remover Industrial Strength Formula Fast Action (3 X 375gm) (Packaging may vary)
- Price
- £8.88
- Rating
- 4.3/5
- Reviews
- 632
- Age
- 2y ago
Max Strength Caustic Soda High Performance Caustic Soda Drain Unblocker and Degreaser Powerful Sodium Hydroxide for Bins Toilets Drains Concrete Paths and More 1kg - Made in the UK
- Price
- £7.13
- Rating
- 4.5/5
- Reviews
- 313
- Age
- 1y ago
Powerful Drain Cleaner & Unblocker 1KG Caustic Soda Crystals | Heavy Duty Sink & Pipe Unblocker for Grease Hair & Organic Waste | Fast-Acting Professional Strength Formula
- Price
- £6.14
- Rating
- 4.5/5
- Reviews
- 82
- Age
- 6mo ago
Powerful Drain Cleaner & Unblocker l 1KG Caustic Soda | Fast-Acting Heavy-Duty Sink & Drain Cleaner | Strong & Effective | The Original & Best l Works 3x Better Than Bleach (Packaging Varies)
- Price
- £7.54
- Rating
- 4.3/5
- Reviews
- 1,704
- Age
- 3y ago
Max Strength Caustic Soda High Performance Caustic Soda Drain Unblocker and Degreaser Powerful Sodium Hydroxide for Bins Toilets Drains Concrete Paths and More 500g - Made in the UK
- Price
- £4.88
- Rating
- 4.4/5
- Reviews
- 156
- Age
- 1y ago
Trending
90-day click momentum
MUSON Caustic Soda 5KG | Professional Drain Unblocker & Grease Remover | Sodium Hydroxide 98% | Heavy Duty Sink & Pipe Cleaner
- Price
- £30.24
- Rating
- 4.2/5
- Reviews
- 7
- Age
- 2y ago
Powerful Drain Cleaner & Unblocker 1KG Caustic Soda Crystals | Heavy Duty Sink & Pipe Unblocker for Grease Hair & Organic Waste | Fast-Acting Professional Strength Formula
- Price
- £6.14
- Rating
- 4.5/5
- Reviews
- 82
- Age
- 6mo ago
Max Strength Caustic Soda High Performance Caustic Soda Drain Unblocker and Degreaser Powerful Sodium Hydroxide for Bins Toilets Drains Concrete Paths and More 500g - Made in the UK
- Price
- £4.88
- Rating
- 4.4/5
- Reviews
- 156
- Age
- 1y ago
Sodium Hydroxide Caustic soda powder Lye for soap making Sink unblocker the best drain cleaners and unblockers Strongest toilet unblocker kitchen sink unblocker drain cleaner sink cleaner 1KG
- Price
- £11.16
- Rating
- 4.7/5
- Reviews
- 131
- Age
- 1y ago
Max Strength Caustic Soda High Performance Caustic Soda Drain Unblocker and Degreaser Powerful Sodium Hydroxide for Bins Toilets Drains Concrete Paths and More 1kg - Made in the UK
- Price
- £7.13
- Rating
- 4.5/5
- Reviews
- 313
- Age
- 1y ago
Newest
by launch datePowerful Drain Cleaner & Unblocker 1KG Caustic Soda Crystals | Heavy Duty Sink & Pipe Unblocker for Grease Hair & Organic Waste | Fast-Acting Professional Strength Formula
- Price
- £6.14
- Rating
- 4.5/5
- Reviews
- 82
- Age
- 6mo ago
5 Kg Drain Unblocker | Caustic Soda | Professional Grade Drain Cleaner Commercial Kitchen Degreaser Soap & Chemical Manufacturing Textile & Water Treatment Use | 5Kg
- Price
- £34.26
- Rating
- 4.1/5
- Reviews
- 39
- Age
- 10mo ago
Max Strength Caustic Soda High Performance Caustic Soda Drain Unblocker and Degreaser Powerful Sodium Hydroxide for Bins Toilets Drains Concrete Paths and More 1kg - Made in the UK
- Price
- £7.13
- Rating
- 4.5/5
- Reviews
- 313
- Age
- 1y ago
Max Strength Caustic Soda High Performance Caustic Soda Drain Unblocker and Degreaser Powerful Sodium Hydroxide for Bins Toilets Drains Concrete Paths and More 500g - Made in the UK
- Price
- £4.88
- Rating
- 4.4/5
- Reviews
- 156
- Age
- 1y ago
Max Traditional Soda Crystals 450g - Remove Stubborn Grease and Stains - Powerful Multipurpose Dishwasher Washing Machine Cleaner - Fast Acting Soda Crystals with Lasting Results
- Price
- £3.35
- Rating
- 4.5/5
- Reviews
- 204
- Age
- 1y ago
Competition: brands, sellers & click share
The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.
Brands
9 rising
Sellers
24
Top-5 brand share
90%
Top 20: 100%
Top-5 click share
83%
Top 20: 100%
Open market
7%
- Max34%
- EasyClean26%
- Epished17%
- The Retail Heaven10%
- Thomas Bewick3%
- MUSON TRADE3%
- Open — no brand owns it (3 brands, 7%)
Caustic Soda demand & seasonality
Weekly search volume, with the niche's key stats alongside.
No pronounced peak months · busiest ÷ quietest = 1.3×
Top Caustic Soda search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- caustic soda140K/yr
- caustic soda drain unblocker51K/yr
- caustic soda max strength11K/yr
- caustic soda crystals12K/yr
- caustic soda powder7K/yr
- costick soda drain cleaner6K/yr
- costick soda3K/yr
What reviews say buyers love and hate about Caustic Soda
What buyers mention most, as a share of all reviews.
What buyers love
87% of reviews“Good brand use for washing powder”
“Great Value”
“As advertised”
“Very strong”
“Easy to Use”
What buyers complain about
75% of reviews“Did not work for”
“Not Strong Enough”
“not cheaper though”
“Does nothing followed instructions and just nothing”
“it doesnt dissolve”
Caustic Soda return rate & reasons
Why buyers send it back, as a share of all return requests.
0.1%
Return rate
13%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Caustic Soda questions
The questions sellers ask about this niche, answered from the tracked metrics.
Related niches
Same-category niches scoring near this one — the next ones worth researching.
Best Flapen score
The highest-scoring niches we track right now, across every category.
