







🧊 Stay sharp, stay fresh—naturally.
This 100% pure potassium alum crystal block serves as a natural, unscented deodorant and aftershave. It instantly soothes razor burn, stops minor bleeding, and neutralizes odor without alcohol or synthetic fragrances. Long-lasting and travel-friendly, it fits seamlessly into any clean-beauty grooming routine while being sustainably sourced and cruelty-free.






| ASIN | B0CZXRQ52J |
| Best Sellers Rank | #12,376 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #3 in Shaving Alum |
| Customer Reviews | 4.4 4.4 out of 5 stars (460) |
| Manufacturer | REVAAIS India |
| Product Dimensions | 1.97 x 1.97 x 1.97 inches; 3.53 ounces |
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𝗕𝗘𝗦𝗧. 𝗨𝗡𝗗𝗘𝗥 𝗔𝗥𝗠. 𝗗𝗘𝗢𝗗𝗢𝗥𝗜𝗭𝗘𝗥. 𝗛𝗔𝗡𝗗𝗦. 𝗗𝗢𝗪𝗡.
there is absolutely NO comparison to any other product I have ever tried for underarm odor. I shower every other day and do not sweat much, but I have struggled with 𝗡𝗔𝗦𝗧𝗬 BO for years that nothing could fix. It started in my adult years with a little smell the day after a shower, but after starting adderall two years ago, at 23, it made me 𝗧𝗛𝗘 𝗦𝗧𝗜𝗡𝗞𝗜𝗘𝗦𝗧 person on earth. the odor was so strong that not a single deodorant could touch it. I tried EVERY natural deodorant out there and eventually even desperately switched back to conventional ones, but nothing worked. for two years, the only thing that has significantly cut the odor was scrubbing my underarms raw in the shower, and even then, the smell would come back within hours. I was stinky despite my best efforts... then one day a few months ago I saw a TikTok about how alum stone has been used as a deodorant for hundreds of years in various areas around the world. I said f- it, and decided to look into it and purchase one for myself, not expecting anything different than the dozens of other deodorizers I've bought over the years. and let me tell you, this alum stone has changed. my. life. my routine: I use it once a day. I get my underarms wet, rub the stone all over the area, not just the pit, for about 15 seconds each, and let it air dry. sometimes if I am in a rush I use a cool hair dryer to speed it up. after just a few days, my smell was COMPLETELY gone. 𝗭𝗘𝗥𝗢 𝗢𝗗𝗢𝗥, 𝗡𝗢 𝗧𝗥𝗔𝗖𝗘 𝗪𝗛𝗔𝗧𝗦𝗢𝗘𝗩𝗘𝗥!!! now, alum stone is not a deodorizer or antiperspirant--it kills the odor causing bacteria. so once you wash away any existing BO, it just simply doesn't come back. I even stopped shaving my armpits, which I used to do to control the smell, and weeks later, there is still absolutely no BO. here is my '𝘤𝘰𝘷𝘦𝘳𝘴 𝘢𝘭𝘭 𝘵𝘩𝘦 𝘣𝘢𝘴𝘦𝘴' review: the stone itself is very good quality: dense, sturdy, smooths out after a few uses, and is not crumbly at all. the odor killing strength is amazing (as I've obviously made clear by now), and give 1000% protection for a full 24 hours. I have very sensitive skin and sometimes get a little irritation, but usually only if I scrubbed too hard in the shower first--but still, nothing serious or consistent. and the value.. ONE MILLION PERCENT VALUABLE. this thing is going to last 𝗪𝗔𝗬 longer than any deodorant stick any of us could ever use. I tell everyone I can about this stone. it saved me from years of BO hell. I will be using it for the rest of my life.
B**N
Alum stone
I used this product for over a year and I have to say it’s changed the way I use deodorant. There is no scent, you put it on right after a shower on wet clean skin. Works really well in the summer time. Good size, for the price especially considering how expensive corp. deodorant is these days. Excellent value for the size and lasted over a year!
R**.
Good stone, flimzy case
The stone is big and good quality. The case is rather thin and was cracked.
D**R
Just buy it!
I wanted to try this out for a few weeks before leaving a review but the true test will be when I take it on vacation. I live in MA and it’s December so I’m not actively sweating throughout the day. But for the past 3 weeks I’ve been using this faithfully post shower and in the morning if I felt like I slept warm. IT WORKS! I go to the gym and do a pretty intense workout every evening and no BO. I think after about 24 hours you need to shower and re apply but this block really does kill anything that would make you smell. Not sure it would work for everyone but for the price of a stick of deodorant it’s well worth the try. And it’s supposed to last years!
J**N
Blown away
Amazing! I was honestly shocked. I’ve tried crystal deodorant in the past and it did NOT work for me, but I gave it another shot when nothing I used while I was going through chemo worked, either. I’m so glad I did because this is unbelievable. I literally smell like NOTHING all day long. But if you want to smell like something you can always top it off with regular deodorant once it dries down. And this crystal is HUGE. It’s going to take me forever to go through it all. Super effective, definitely worth it. Give it a shot.
A**R
It Actually Works!
I'm never using any other deodorant ever again. This is amazing! No odor at all and perspiration is minimal. I wish I knew about Potassium Alum years ago.
J**R
Not super effective
Not really helping with shaving bumps or body odor… I’ve tried it several times now. Sometimes it even burns where you use it.
ב**ץ
Artwork
Good product
A**I
Great product. I can feel less body odour, and irritation/itching caused by body sprays.
M**N
Very good product.
H**A
TBIS IS MAGIC!!!!!! My underarms never smell and they brightened so much. I recommend it to everyone. No need to wear deodorant
S**N
Been using this everyday since delivery and I feel the block has reduced in size already, it’s been 2 weeks perhaps. But works very well.
E**F
Highly recommended after shave, but it will hurt a little
Trustpilot
5 days ago
2 months ago