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🪒 Stay sharp, stay fresh — naturally unstoppable grooming.
Jack Shaver® Natural Alum Block is a 100% natural potassium alum stone designed to instantly stop bleeding from shaving nicks, soothe razor burn, and close pores. Weighing 100 grams (3.7 oz) and housed in a clear plastic case, it also serves as a long-lasting, fragrance-free deodorant. Hypoallergenic, alcohol-free, and cruelty-free, this multi-functional grooming essential offers professional-grade aftershave care and odor protection for all skin types, making it a must-have for the modern millennial seeking clean, natural, and effective personal care.





| ASIN | B0CVHKFHC7 |
| Active Ingredients | Potassium Alum |
| Best Sellers Rank | #285,410 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #30 in Shaving Alum |
| Brand | JACK SHAVER |
| Brand Name | JACK SHAVER |
| Customer Reviews | 4.5 out of 5 stars 236 Reviews |
| Item Form | Bar |
| Item Volume | 48 cubic centimeters |
| Item Weight | 100 g |
| Manufacturer | Meera Samdani |
| Manufacturer Part Number | 5070002660002 |
| Material Feature | Cruelty Free, Fragrance Free, Hypoallergenic, Natural, Organic |
| Material Features | Cruelty Free, Fragrance Free, Hypoallergenic, Natural, Organic |
| Material Type Free | Alcohol Free, Aluminum Free |
| Model Number | 5070002660002 |
| Number of Items | 1 |
| Product Benefits | Anti Acne, Anti Aging, Anti-Itch, Antibacterial, Redness Reduction, Soothing |
| Recommended Uses For Product | Acne, Infection, Itch Relief, Odor, Rash, Sweat |
| Scent Name | Fresh, Unscented |
| Skin Type | All, Normal |
| Unit Count | 3.7 Ounce |
E**A
Natural and long-lasting deodorant
Excellent product. The alum stone is natural, practical, and very effective. I use it as a deodorant and love how it leaves a fresh, clean feeling without strong scents or chemicals. It lasts a very long time, which makes it super cost-effective. I’ve also tried it after shaving and it instantly soothes the skin. 100% recommended for anyone looking for something natural and healthy.
G**Y
Enjoy your shave.
Good for your Face... After shaving, rinse your face and wet the Alum block and lightly rub shaved areas with block. If you feel a bit of a sting that's the block treating a nick or burn from your shave. Wait 30-40 seconds after applying Alum block and rinse your your face. It is important to remove Alum block coating from your skin. I find it's a good astringent and your shave (and face) feels better.
J**Y
Works well as natural deodorant
I have been using this as deodorant for several weeks and it works very well with no irritation (and both baking soda and alcohol cause irritation for me). I wet the end slightly and really go at it for several seconds to each underarm covering the whole area. It def gets me 24 hours odor free. Let dry out after (don't close it in the box). Sometimes I'll double up with another deodorant after but that might be unnecessary.
J**Y
Excellent bargain: High performance, low price
I had never used an alum block before because I never cut myself much with cartridge razors. But, when I recently switched to a double edged safety razor, I remember a friend of mine who used to give me wet shaving tips saying to make sure I got an alum block for whenever I cut myself. I'm frugal, and this block had the lowest price with the best reviews. I've used it on a few shaves. It seems to disinfect the cuts and slow the bleeding really well. And, it never requires much. I have a feeling it will last me a long time, and I like that.
M**O
Muy bueno
Buen producto, cumple con lo que describe. La calidad es adecuada y funciona como se espera. Llegó en buen estado y dentro del tiempo indicado. En general, una compra satisfactoria.
G**O
Using as an alternative to deodorant
I bought this after researching alternatives for natural deodorant. I usually have a VERY difficult time finding one that works well for me. Most of the deodorant aluminum free or with aluminum, mask the body odor but do nothing to stop it. I bought this and I was so surprised to see the difference after one use. I rubbed the stone in my under arms right after taking a shower and used no deodorant- let me tell you I have never had such a great turn out- there was no smell, no funky pit stench even after working a 12 hour shift. Best believe I will no longer be buying store bought deodorants and this will be my go to moving forward. Hope this helps for anyone on the fence in using this for the same purpose I did.
F**N
Nice addition to my post care.
Alum block was a good experience. You can actually feel the pours closing as the slum bar is in affect.
R**N
Perfect size
Perfect size and does exactly what it is supposed to, and the case is nice to store it in as well.
L**A
Bloque de Alumbra Natural
Ha llegado bien empaquetado el producto, dentro de su cajita para guardarlo. Tiene la clasica componente de todos esta clase de productos para frenar y parar el sangrado.
N**K
Essential feedback tool for wet shaving, and the case is a lifesaver
If you are new to safety razor shaving or just tired of using tiny toilet paper squares for nicks, this block is a substantial upgrade from standard styptic pencils. I was surprised by the sheer size of the 100g block; it is the size of a bar of soap and, given how little dissolves per use, I expect this to last me well over a year. The alum works exactly as intended, providing immediate feedback—meaning it stings briefly—on areas where I applied too much pressure, while instantly sealing up small weeping cuts and tightening the skin. The real selling point for me, however, is the included plastic case. Since alum is highly water-soluble, it will slowly dissolve into a mess if you leave it sitting directly on a wet countertop, so having a dedicated container to store it in is essential for keeping it clean and intact. My only word of caution is that natural alum is brittle like ceramic, so if you drop this on a tiled bathroom floor it will shatter, but as long as you keep a good grip, it is a fantastic finish to a shave.
D**S
Zufrieden
Top tut was es soll
K**A
My Opa used these and I feel so dumb for not trying them until I was 40.
Wash your face with this thing before and after you shave. Shaving cuts of REMARKABLE size will stop bleeding nearly instantly. Genuinely considering packing this puppy in my first aid kit. 7/5 stars.
J**S
Perfect for ladies too
Works really well to help stop my razor burn. Legs feel great
Trustpilot
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