---
title: "Alum Block — $191K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/beauty-personal-care/alum-block"
last_updated: "2026-08-09T15:08:00.784Z"
locale: en
meta:
description: "Niche score 41/100 · $191K/yr market · 157K searches/yr · $9.24 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · $191K/yr market · 157K searches/yr · $9.24 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Alum Block — $191K/yr Amazon US Niche (2026) - Flapen"
---
# **alum block**
**Skip it**
Prices mostly outside the sweet spot ($6.16–$14.89) — this niche doesn't clear our bar today.
Market size 38Growth 39Conversion 96Competition 6Returns 97Price range 0Avg price 27Brand share 18Review moat 47Quality gap 42
**Returns**
**Incredible****0.7%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****13.1%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Okay****1,807.43**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+11.3%**
90-day search growth — must beat 0% to launch
**Market size**
**Okay****$191K**
$191K/yr · 157K searches
**Avg price**
**Okay****$9.24**
avg listing price — sweet spot $15–$100
**Brand share**
**Bad****93%**
top-5 brand share — brand-locked demand
**Competition**
**Bad****93%**
top-5 click share — a locked-up shelf
**Price range**
**Bad****$6.16–$14.89**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, alum block is a $191K/yr Amazon United States market (157K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in Mar. Verdict: Skip it — 41/100.
Data updated Jul 15, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **alum block market data**
- **Units sold / yr**
- **20K–25K**
- avg 2,000–2,500/product
- **Revenue / yr**
- **$185K–$231K**
- units × avg price
- **Conversion rate**
- **13.1%**
- **Avg BSR**
- **#25**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **79 months**
- **Avg seller age**
- **167 days**
## **Competition & brand share**
The top 5 products capture 93% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▼falling
**Sellers**
**12**
**Top-5 brand share**
**93%**
Top 20: 100%
**Top-5 click share**
**93%**
Top 20: 100%
**Open market**
**3%**
- Gentleman Jon52% - Proraso26% - G.B.S7% - Homeda4% - Parker Safety Razor4% - the shave factory4% - Open — no brand owns it (1 brand, 3%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +11.3% search growth over the last 90 days.
6K4KSpike '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/beauty-personal-care/alum-block/trend)
## **Top alum block search terms**
- **alum block**109K/yr+9.3%12.0% conv. - **alum block for shaving**31K/yr-3.5%11.6% conv. - **alum bar**17K/yr+54.4%6.6% conv. [**All search terms **](https://flapen.com/research/us/beauty-personal-care/alum-block/search-terms)
## **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%15%$29K30%$57K45%$86K60%$114K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 7 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Gentleman Jon 3.7 Ounce Alum Block in Plastic Case - Upgrade Your Shave - Soothing Aftershave Solution for Shaving Razor Burn Relief - Travel Friendly Durable Plastic Case Included Aftershave for Men**Gentleman Jon**$9.42**4.4★7,280 rev](https://www.amazon.com/dp/B00FA35K02) [2**Proraso Post-Shave Stone Natural Alum Block 1 Count (Pack of 1)**Proraso**$9.76**4.6★2,968 rev](https://www.amazon.com/dp/B07B8MF3N1) [3**Gents Alum Block in Plastic Case | Upgrade Your Shave - Soothing Aftershave Solution for Shaving Razor Burn Relief - Travel Friendly Durable Plastic Case Included (3.5 Ounces Pack of 3)**G.B.S**$10.13**4.5★834 rev](https://www.amazon.com/dp/B07HN9KTRW) [4**Homeda Alum Block for Shaving Alum Stone for Face Piedra De Alumbre Natural Bar for Underarm Fitkari Fitkiri Allum Deodorant for Men and Women - with Storage Case (100g - 1 Piece)**Homeda**$7.23**4.6★409 rev](https://www.amazon.com/dp/B0DWN95M9F) [5**Parker Large Alum Block with Travel Case (125 g./4.4 oz.) - A Natural Aftershave with Antiseptic Properties - an Essential Item for Every Wet Shaver**Parker Safety Razor**$14.89**4.5★818 rev](https://www.amazon.com/dp/B01IDJJJR4)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Homeda Alum Block for Shaving Alum Stone for Face Piedra De Alumbre Natural Bar for Underarm Fitkari Fitkiri Allum Deodorant for Men and Women - with Storage Case (100g - 1 Piece)**Homeda**$7.23**409 rev1y ago](https://www.amazon.com/dp/B0DWN95M9F) [**The Shave Factory Alum Block Aftershave Solution for Shaving Razor Burn Relief in Plastic Case 3.53 oz. 100gr.**the shave factory**$6.16**112 rev1y ago](https://www.amazon.com/dp/B0DYWRWYN4) [**Classic Samurai Block Alum Post-Shave Stone 2.48oz**Classic Samurai**$7.08**231 rev4y ago](https://www.amazon.com/dp/B0B5485C19) [**Gents Alum Block in Plastic Case | Upgrade Your Shave - Soothing Aftershave Solution for Shaving Razor Burn Relief - Travel Friendly Durable Plastic Case Included (3.5 Ounces Pack of 3)**G.B.S**$10.13**834 rev7y ago](https://www.amazon.com/dp/B07HN9KTRW) [**Proraso Post-Shave Stone Natural Alum Block 1 Count (Pack of 1)**Proraso**$9.76**2,968 rev8y ago](https://www.amazon.com/dp/B07B8MF3N1)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Homeda Alum Block for Shaving Alum Stone for Face Piedra De Alumbre Natural Bar for Underarm Fitkari Fitkiri Allum Deodorant for Men and Women - with Storage Case (100g - 1 Piece)**Homeda**$7.23**4.6★**▲ 61%**](https://www.amazon.com/dp/B0DWN95M9F) [**Proraso Post-Shave Stone Natural Alum Block 1 Count (Pack of 1)**Proraso**$9.76**4.6★**▲ 20%**](https://www.amazon.com/dp/B07B8MF3N1) [**Parker Large Alum Block with Travel Case (125 g./4.4 oz.) - A Natural Aftershave with Antiseptic Properties - an Essential Item for Every Wet Shaver**Parker Safety Razor**$14.89**4.5★**— 4%**](https://www.amazon.com/dp/B01IDJJJR4) [**Classic Samurai Block Alum Post-Shave Stone 2.48oz**Classic Samurai**$7.08**4.5★**— 5%**](https://www.amazon.com/dp/B0B5485C19) [**Gentleman Jon 3.7 Ounce Alum Block in Plastic Case - Upgrade Your Shave - Soothing Aftershave Solution for Shaving Razor Burn Relief - Travel Friendly Durable Plastic Case Included Aftershave for Men**Gentleman Jon**$9.42**4.4★**— 6%**](https://www.amazon.com/dp/B00FA35K02)
**~~View all trending →~~**
## **What buyers say about alum block**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**26%
*“GREAT product that goes way back”*
**Efficiency**13%
*“Does the job well”*
**Value For Money**12%
*“It's so cheap”*
**Advertised Vs Actual Product**11%
*“Exactly what I needed”*
**Durability**5%
*“Long lasting and durable”*
**Suitability Dry Skin**4%
*“I say shave, do a cold rinse, apply the alum and let it dry, cold rinse again, dry reasonably well, and apply a good aftershave”*
**Smell**4%
*“Great under the arms to prevent odors”*
**Size-Overall**3%
*“It used to fit very nicely in the box”*
**Symptom Reduction**2%
*“great on pimples”*
**Allergies**2%
*“no more irritation from other gel”*
### **What buyers complain about **
**Durability**24%
*“isnt as durable”*
**Hard Feel**11%
*“Too rough”*
**Allergies**8%
*“Harsh to skin”*
**Quality-Overall**7%
*“Poor Quality”*
**Texture/Consistency-Overall**7%
*“The block was crumbly”*
**Moist/Dry**6%
*“Just wet and slide across your face after shaving”*
**Functionality-Overall**4%
*“Did not work for me”*
**Defective Material/Parts**4%
*“Arrived broken”*
**Dilute/Watery**2%
*“MOLDY”*
**Product Condition**2%
*“I think I got a used product which is not what u paid for”*
### **Top return reasons **
**Defective Material/Parts**25%
**Material Quality**13%
**Size-Overall**9%
**Advertised Vs Actual Product**8%
**Functionality-Overall**7%
**Durability**6%
**Stain Resistance**5%
**Smell**4%
**Quality-Overall**3%
**Value For Money**3%
## **Common questions**
- **Is alum block profitable to sell on Amazon United States?**
- The niche generates $191K/yr across 7 tracked products. 90-day search growth is +11.3%. Flapen's verdict: Skip it (41/100).
- **How competitive is the alum block niche?**
- 7 brands and 12 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 93% of demand.
- **What do buyers complain about in alum block?**
- Top complaints mined from reviews: Durability, Hard Feel, Allergies. The return rate is 0.7%.
- **When does demand for alum block peak?**
- Demand peaks in Mar; the busiest month runs 1.6× the quietest.
- **What does it cost to enter the alum block niche?**
- Listings span $6.16–$14.89; the average listing price is $9.24 (sweet spot $15–$100). The average incumbent carries 1,807 reviews — the moat a new listing must climb.
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