







🧔 Elevate your shave game — smooth, fresh, and effortlessly refined.
Gentleman Jon’s 3.7-ounce alum block is a premium, natural aftershave solution designed to soothe razor burn, stop bleeding from minor cuts, and tone skin. Housed in a durable plastic case, it’s perfect for daily use and travel, offering months to years of reliable performance with its potent 100% potassium alum formula.



























| ASIN | B00FA35K02 |
| Best Sellers Rank | #11,519 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #2 in Shaving Alum |
| Brand | Gentleman Jon |
| Brand Name | Gentleman Jon |
| Customer Reviews | 4.4 out of 5 stars 7,096 Reviews |
| Item Form | Solid |
| Item Volume | 0.1 Kilograms |
| Item Weight | 3.7 Ounces |
| Manufacturer | Gentleman Jon |
| Number of Items | 1 |
| Product Benefits | Tightening |
| Recommended Uses For Product | Soothing, Toning, Acne |
| Scent | Unscented |
| Scent Name | Unscented |
| Skin Type | All |
| UPC | 796433825678 767644749480 617395017744 |
| Unit Count | 1 Count |
S**.
Must-have for wetshaving, very soothing and lasts forever!
This stuff is great! I just recently started wetshaving with a double edge safety razor and at first I just used Witch Hazel and Clubman Pinaud aftershave lotion. I still use both of those but after being highly recommended to me by several people I picked this up as well. It is DEFINITELY worth it! Being a beginner I'm still learning the proper technique and I was getting some irritation and even some "razor bumps". The witch hazel and aftershave helped a bit, as well as some facial moisturizer, but adding the Alum block to my regiment helped a LOT today! I just received it and tried it after shaving today and instantly felt a difference. I was told it also lets you know how you are shaving, if you rub it on your face afterwards and you feel some slight burning it means you weren't using good technique and you should adjust your angle and pressure. I did pretty well today with my DE razor and didn't feel any burning so that's good! I did have one small nick on my chin and it stopped the bleeding instantly. Before I recieved this the past couple shaves left my face very irritated and dry, even some dry skin peeling off in places. It's now been about 7 hours since my last shave using this and my face feels super soft and smooth with zero irritation. I'm sold! Everything I was told about this stuff is true so far, it is great! Just wet the block and rub it on your face, it soothes the razor burn and will stop any bleeding almost instantly in case you nicked yourself. I have a Clubman styptic pencil as well for cuts but this stuff works just as well and doesn't burn quite as much, plus you can use this stuff all over your face instead of just for cuts/nicks. The styptic pencil is also white and leaves a white residue on your face while this is clear and not noticeable. From what I've read these things last for YEARS. You just rub the block and barely use any, so paying the $8 is a good investment. There was a slightly cheaper and smaller block here on Amazon but it did not have a case. I'm kind of a neat freak and I like everything organized so the case is totally worth it! The Razorock brand Alum block has a case as well but it is more expensive and is only 3.2oz vs the 3.7oz this one is. Based on my research this is the best deal here on Amazon for an Alum block with case, plus the Gentleman Jon artwork/logo is really cool! I'm a huge fan of the vintage/retro styling. I've also read some people use this as a natural deodorant, I may try that in the future because I'm trying to be healthier and reduce the amount of chemicals in products I use. Since I'm using this one on my face though I'm gonna have to get a second one for that purpose, I wouldn't want to use this on my armpits and then on my face hah! TL;DR: Great quality, great case, great results, great value. If you get skin irritation from shaving, start using this after shaving!
A**E
Great and refreshing way to finish your shaving routine
I am fairly new to wet shaving with double edged safety razors. I recently decided to up my game and bought a number of new items to add to my shaving routine; this was one of them. Along with a decent safety razor, shaving brush, shaving cream, and a bowl for building lather, this product complements it all perfectly. I tried this product for the first time today after a two pass shave with a Merkur safety razor and Proraso rinfrescante shaving cream. I could feel it working and absorbing into my skin. I had some minor irritation on my neck from shaving against the grain, but using this block soothed the burning immediately. I also had one small nick which the block took care of too. I originally thought this product wouldn’t be of much use to me. I would normally just rinse with water and apply aftershave. I’m glad I bought his product and will continue to use it every time I shave. It’s a really nice way to finish off a close shave and it feels good too.
I**D
An Alum Block is a MUST after a close shave! This is a GREAT Choice!
My dad always used a styptic pencil for a cut when shaving but I never knew anything about an Alum Block until reading and researching more about the art of a great shave. I find this Gentleman Jon 3.7 Ounce Alum Block a must after every shave. No the alum block is not the exact same as a styptic pencil but in my case I like it better as it will heal a small cut and you can feel it tighten the skin on my face. It's a perfect ending for a perfect shave. I use this block in conjunction or just prior to good after shave and then some talc but I find this alum block will replace a aftershave if in a hurry. I love the included plastic case as an alum block needs protection as a drop in the shower without a case will shatter the block. After embracing the true art of a great close shave, I find this Alum Block is one of THE most important parts of that great shave. experience. Tightens, soothes the skin on my face and head and is almost magical in what it does. Makes me wonder why I never knew anything about a Alum Block and you don't see this product on the shelf in the shave section of those big box stores as this thing is a MUST have for the perfect shave!
C**.
Good for stopping minor bleeds, but crumbly texture
The alum block works well for stopping a minor bleed. It can crumble if it gets wet, so handle it with care. I bought this block in the hopes that it might work as a deodorant crystal in the same way that I've done with another brand's alum block in the past, but it didn't work at all for that. Given that it wasn't meant for that purpose, I can't fault it for not working in that way.
D**S
Great Plastic Case
This is a great alum block that can really reduce razor burn. The block itself is a little rougher than others that I have used, but it still works great. What I really like is the plastic case that it comes in to protect the block when traveling. I have had other alum blocks break or come with brittle hard plastic cases. The protective plastic case which the Gentleman Jon comes in is flexible but durable and a lifesaver.
J**X
Great multi-use alum bar!
Quick shipping and well protected so block wasn't broken or shattered in transport. The small translucent case protects the block when not in use. This block is not just for shaving or small cuts/scrapes but is antisceptic. If you wet the bar or leave your underarms wet after a shower, rub the bar well in the armpit area, then pat the block with a towel or piece of toiler paper and allow to dry in the case for the next use. When your arms air-dry the alum acts as a natural anti-perspirant and odor killer. I'll be re-ordering in a few months when the bar finally melts away...Great product!
J**Y
Solid product
Solid product. Lasts a long time. Second time purchasing and have zero complaints. Great on sensitive skin.
J**N
A Poorly Made Powder Alum Block That Has More In Common With A Brick Than An Alum Crystal =/
Honestly, the positive reviews are a bit baffling. Maybe production processes have changed, but I'm doubtful. Either those reviewers have skin like cured leather stretched over a tank chassis, or they’re using this on something other than their face. If your skin has nerve endings, blood flow, or any semblance of humanity, this product will make you regret your life choices. I genuinely don’t understand how this thing is being used by actual human beings. This alum block feels less like a shaving accessory and more like something you’d find in a masonry kit. The surface is incredibly rough -- dragging it across your skin after shaving is like rubbing a chunk of unfinished concrete on freshly scraped flesh. First-time alum users especially: run. This isn’t a proper crystal block -- it’s a brutally rough compressed powder brick, and easily the worst alum block I’ve ever used. Using it feels less like post-shave care and more like exfoliating with sandpaper. After one use, my face looked like I’d lost a fight with a cheese grater, which is impressive considering the shave itself caused almost no irritation. While plenty of alum blocks today are compressed powder, this one stands out for all the wrong reasons: badly made, poorly finished, and completely unfit for post-shave use. Save your face, your neck, and your sanity. Unless you’re exfoliating a rhinoceros, avoid this alum block at all costs. If this is your first alum block and you walk away thinking, “Maybe alum just isn’t for me” or “My skin must be too sensitive,” rest assured: it’s not you -- it’s this glorified brick. The best joke here is the price. For the same money, you can buy a real, cut-from-a-crystal alum block instead of this crumbly, compressed powder impostor. Don’t let the shiny “Amazon’s Top Pick” or “Best Seller” badges fool you -- apparently no one involved actually used it on their face. If you skim other reviews, you’ll see photos of these blocks arriving pre-destroyed, shedding powder like chalk, or developing spider-crack fractures after minimal use. That’s because this isn’t a solid crystal; it’s a brittle landscaping paver in disguise. An alum block shouldn’t disintegrate during shipping or self-destruct in your bathroom. This one manages both. PLEASE, save your money.
Trustpilot
2 days ago
1 week ago