---
title: "Alum Block — £36K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/alum-block"
last_updated: "2026-07-31T09:48:00.196Z"
locale: en
meta:
description: "Niche score 44/100 · £36K/yr market · 57K searches/yr · £6.09 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · £36K/yr market · 57K searches/yr · £6.09 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Alum Block — £36K/yr Amazon UK Niche (2026) - Flapen"
---
# **alum block**
**Skip it**
Prices mostly outside the sweet spot ($3.92–$9.22) — this niche doesn't clear our bar today.
Market size 9Growth 52Conversion 89Competition 16Returns 99Price range 0Avg price 17Brand share 41Review moat 64Quality gap 53
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****10.4%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****921.73**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Growth**
**Good****+23.9%**
90-day search growth — must beat 0% to launch
**Brand share**
**Okay****80%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Bad****£6.09**
avg listing price — sweet spot $15–$100
**Competition**
**Bad****80%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****£36K**
£36K/yr · 57K searches
**Price range**
**Bad****£3.92–£9.22**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United Kingdom niche tracking, alum block is a £36K/yr Amazon United Kingdom market (57K searches/yr). The top 5 brands hold 80% of demand. Verdict: Skip it — 44/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **alum block market data**
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **£37K–£49K**
- units × avg price
- **Conversion rate**
- **10.4%**
- **Avg BSR**
- **#66**
- **Page quality**
- **0%**
- **Prime**
- **91%**
- **Sponsored**
- **64%**
- **Out of stock**
- **3.6%**
- **Avg brand age**
- **72 months**
- **Avg seller age**
- **181 days**
## **Competition & brand share**
The top 5 products capture 80% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **▼falling
**Sellers**
**40**
**Top-5 brand share**
**80%**
Top 20: 100%
**Top-5 click share**
**80%**
Top 20: 100%
**Open market**
**15%**
- Herbs Botanica28% - Masala Cottage17% - JACK SHAVER16% - Proraso13% - Osma Laboratoires7% - The Amin Beauty Tools4% - Open — no brand owns it (5 brands, 15%)
## **Top alum block 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%10%£4K20%£7K30%£11K40%£15K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Herbs Botanica Alum Block for Shaving Soothing Aftershave Solution for Men Stops Bleeding from Nicks & Cuts Fitkari Alum Stone for Skin Care 3.5 oz Piedra de Alumbre by Herbs Botanica**Herbs Botanica**£4.29**4.3★186 rev](https://www.amazon.co.uk/dp/B0DNMY6V8F) [2**Alum Block Wet Shave Bloc After Shave Blood Stopper Antiseptic Astringent After Shaving Alum Balm Block 100G by Masala Cottage (100 Grams) (1 Peaces)**Masala Cottage**£3.92**4.2★192 rev](https://www.amazon.co.uk/dp/B0CX17XG92) [3**Jack Shaver Natural Alum Block in Plastic Case (100 g./3.5 oz.) Aftershave Blood Stopper Antiseptic Astringent Soothing Solution for Shaving Razor Burn Relief**JACK SHAVER**£9.22**4.5★226 rev](https://www.amazon.co.uk/dp/B0CVHKFHC7) [4**PRORASO Post Shave Stone 100 g 400801**Proraso**£6.44**4.4★2,946 rev](https://www.amazon.co.uk/dp/B07B8MF3N1) [5**Osma Bloc - Alum Block 75g (Soothes Shaving Irritation)**Osma Laboratoires**£6.87**4.5★4,879 rev](https://www.amazon.co.uk/dp/B004NEHR28)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Fatakadi Alum Slab 100g x 2 Natural Phitkari (Fitkari) Traditional Multipurpose Mineral for Skin Water Purification & Aftershave**ONE STOP DEALERS**£5.37**18 rev1y ago](https://www.amazon.co.uk/dp/B0F7HHQT93) [**Herbs Botanica Alum Block for Shaving Soothing Aftershave Solution for Men Stops Bleeding from Nicks & Cuts Fitkari Alum Stone for Skin Care 3.5 oz Piedra de Alumbre by Herbs Botanica**Herbs Botanica**£4.29**186 rev1y ago](https://www.amazon.co.uk/dp/B0DNMY6V8F) [**Alum Block Alum Stone Fitkari Natural Aftershave Soothing Solution for Shaving Razor Nicks Bumps & Skin Irritation- Unscented Deodorant and Antiperspirant for Lasting Protection from Body Odour 100gm**The Amin Beauty Tools**£6.48**62 rev1y ago](https://www.amazon.co.uk/dp/B0DLG6YQWX) [**Natural Alum Block in Plastic Case (100 g./3.5 oz.) Aftershave Stops Minor Nicks & Cuts After Shaving - Antiseptic Astringent Soothing Solution for Shaving Razor Burn Relief**ROZAR**£4.18**29 rev2y ago](https://www.amazon.co.uk/dp/B0DB6GQBC4) [**Alum Block Wet Shave Bloc After Shave Blood Stopper Antiseptic Astringent After Shaving Alum Balm Block 100G by Masala Cottage (100 Grams) (1 Peaces)**Masala Cottage**£3.92**192 rev2y ago](https://www.amazon.co.uk/dp/B0CX17XG92)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Premium Alum Block for Shaving - 100% Natural Potassium Alum Astringent Stone - Instantly Stops Bleeding Soothes Razor Burn & Prevents Ingrown Hairs**Glamified , glam**£5.01**4.3★**▲ 149%**](https://www.amazon.co.uk/dp/B00OV4KH9U) [**Fatakadi Alum Slab 100g x 2 Natural Phitkari (Fitkari) Traditional Multipurpose Mineral for Skin Water Purification & Aftershave**ONE STOP DEALERS**£5.37**4.8★**▲ 103%**](https://www.amazon.co.uk/dp/B0F7HHQT93) [**Alum stone 115gr natural mineral deodorant vegan | has an antiseptic effect does not clog pores aftershave can be used to prevent skin irritation**ETC Cosmetic`s**£6.21**4.4★**▲ 53%**](https://www.amazon.co.uk/dp/B0BQC9FH1S) [**Herbs Botanica Alum Block for Shaving Soothing Aftershave Solution for Men Stops Bleeding from Nicks & Cuts Fitkari Alum Stone for Skin Care 3.5 oz Piedra de Alumbre by Herbs Botanica**Herbs Botanica**£4.29**4.3★**▲ 42%**](https://www.amazon.co.uk/dp/B0DNMY6V8F) [**PRORASO Post Shave Stone 100 g 400801**Proraso**£6.44**4.4★**▲ 12%**](https://www.amazon.co.uk/dp/B07B8MF3N1)
**~~View all trending →~~**
## **What buyers say about alum block**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**23%
*“This is a very good quality alum shaving block”*
**Advertised Vs Actual Product**12%
*“Does what its supposed to”*
**Durability**7%
*“Plus point- longevity is great”*
**Value For Money**7%
*“It was very good value for money”*
**Efficiency**6%
*“Working great”*
**Allergies**6%
*“This has helped reduce razor rash and spots”*
**Soft Feel**5%
*“fresh feeling”*
**Size-Overall**4%
*“It's a nice size”*
**Smell**4%
*“Works well for underarm odour”*
**Ease Of Use**3%
*“Easy to use”*
### **What buyers complain about **
**Functionality-Overall**15%
*“Doesnt work”*
**Quality-Overall**15%
*“not as good as i expected”*
**Material Quality**12%
*“The case is made of the most flimsy plastic as other reviews have mentioned”*
**Burnt/Roasted/Overbaked**8%
*“Burned, a lot”*
**Advertised Vs Actual Product**8%
*“Misleading marketing photos made me thought it would again”*
**Smell**6%
*“Its a bit stinky”*
**Hard Feel**4%
*“A bit rough”*
**Suitability Dry Skin**3%
*“May require multiple passes over damp skin”*
**Allergies**2%
*“you can get more rashes from shaving”*
### **Top return reasons **
**Defective Material/Parts**33%
**Size-Overall**31%
**Functionality-Overall**8%
**Advertised Vs Actual Product**8%
**Salt Content**8%
**Smell**8%
**Comfort-Overall**3%
**Strength**3%
## **Common questions**
- **Is alum block profitable to sell on Amazon United Kingdom?**
- The niche generates £36K/yr across 11 tracked products. 90-day search growth is +23.9%. Flapen's verdict: Skip it (44/100).
- **How competitive is the alum block niche?**
- 11 brands and 40 sellers compete. The top 5 products take 80% of clicks and top 5 brands hold 80% of demand.
- **What do buyers complain about in alum block?**
- Top complaints mined from reviews: Functionality-Overall, Quality-Overall, Material Quality. The return rate is 0.1%.
- **What does it cost to enter the alum block niche?**
- Listings span £3.92–£9.22; the average listing price is £6.09 (sweet spot $15–$100). The average incumbent carries 922 reviews — the moat a new listing must climb.
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