--- product_id: 1534650 title: "Bloc Osma Alum Block, 2.65 Ounce" brand: "osma" price: "NT$622" currency: TWD in_stock: true reviews_count: 13 category: "Osma" url: https://www.desertcart.tw/products/1534650-bloc-osma-alum-block-2-65-ounce store_origin: TW region: Taiwan --- # Soothes & cools skin instantly Natural astringent closes razor nicks Handmade in France, premium quality Bloc Osma Alum Block, 2.65 Ounce **Brand:** osma **Price:** NT$622 **Availability:** ✅ In Stock ## Summary > 🧊 Stay sharp, stay fresh — the artisanal alum block your skin deserves! ## Quick Answers - **What is this?** Bloc Osma Alum Block, 2.65 Ounce by osma - **How much does it cost?** NT$622 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/1534650-bloc-osma-alum-block-2-65-ounce) ## Best For - osma enthusiasts ## Why This Product - Trusted osma brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-natural purity:** Free from sulfates, parabens, and harsh chemicals—pure skin wellness - • **Dual-action defense:** Stops bleeding & neutralizes bacteria for a flawless post-shave finish - • **Multi-use powerhouse:** Effective as both aftershave and underarm deodorizer—simplify your routine - • **Long-lasting solid block:** 2.65 oz that lasts years with daily use—sustainable grooming essential - • **French artisanal craftsmanship:** Handmade in France for that elevated, authentic grooming experience ## Overview Bloc Osma Alum Block is a 2.65-ounce all-natural astringent crafted in France to soothe razor nicks, disinfect skin, and neutralize odor-causing bacteria. This handmade, chemical-free solid block doubles as an aftershave and deodorant, offering long-lasting, irritation-free protection for all skin types. Ideal for the modern professional seeking a minimalist yet effective grooming essential. ## Description desertcart.com: Bloc Osma Alum Block, 2.65 Ounce : Beauty & Personal Care Review: Imagine how much the bacteria would hate to live on a solid block of the stuff - I use this block as both an underarm de-odorizer and an aftershave treatment on my face. Yup. I use the same block for both. The reason it works on your pits is because it creates a hostile environment for odor causing bacteria. That's just by getting its residue on your skin. Imagine how much the bacteria would hate to live on a solid block of the stuff. Thus, it takes on no odor and does not cause any bacterial razor bumps or anything. As an aftershave treatment, it stops bleeding from tiny cuts and weepers that are not leaking much, and it disinfects the whole surface that it is applied to. For a substantial cut, it won't stop the bleeding and you will need a styptic pencil, so if you have a tendency to hack your face up, this won't be your best solution. However, you will find this soothing as a daily application, so it should definitely be a part of your tool kit. This is good for what it's good for, and the styptic pencil handles the rest. Keep both on hand. As a deodorant, it surprises me how effective this is. I use it daily, and it prevents odor all day if I don't sweat, or a partial day if I do. This is not an anti-perspirant, so if you decide to go out and chop some wood, don't be surprised if you need to reapply some alum. Or you can do what I do, which is keep a stick of deodorant around for emergencies. As it is though, I would say this works better than the organic deodorants I have had to use for years because of skin allergies to anti-perspirants. This is a solid chunk of alum, so it isn't wearing down much. I think this thing could probably last a couple years with daily use. I want to point out that this does not leave a visible residue on your face. You do not need to rinse or wipe it off. I apply it while my face is still wet after I rinse off my shaving cream remnants, and I let it dry. Then I put on an aftershave splash and lotion and head out the door. Review: Good quality - Well, seems to be a solid block. Don't drop it on a hard floor! This is my favorite Alum Block tested to date because it seems to be a pure solid block! Works perfectly for me ## Features - All natural astringent that closes razor nicks - Soothes and cools - Handmade - Made in France ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004NEHR28 | | Age Range (Description) | Adult | | Age Range Description | Adult | | Best Sellers Rank | #87,104 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #15 in Shaving Alum | | Brand | Osma | | Brand Name | Osma | | Customer Reviews | 4.5 out of 5 stars 4,961 Reviews | | Item Form | Block | | Item Weight | 2.88 ounces | | Manufacturer | Derby International LLC, dba KANAR | | Manufacturer Part Number | BLOC1 | | Material Type Free | Sulfate Free, Phosphate Free, Paraffin Free, Petroleum Free, Phthalate Free, Dye Free, Formaldehyde Free, Aluminum Free, Silicone Free, Paraben Free, Alcohol Free, Lanolin Free, Preservative Free, Lactose Free, Oil Free, Formaldehyde Donor Free Material Type Free Sulfate Free, Phosphate Free, Paraffin Free, Petroleum Free, Phthalate Free, Dye Free, Formaldehyde Free, Aluminum Free, Silicone Free, Paraben Free, Alcohol Free, Lanolin Free, Preservative Free, Lactose Free, Oil Free, Formaldehyde Donor Free See more | | Model Number | BLOC1 | | Number of Items | 1 | | Product Benefits | Soothing | | Scent | Unscented | | Scent Name | Unscented | | Skin Type | All, Dry | | UPC | 798256388668 750557017425 793379161440 749447616466 | | Unit Count | 2.65 Ounce | ## Product Details - **Brand:** Osma - **Item Form:** Block - **Scent:** Unscented - **Skin Type:** All, Dry ## Images ![Bloc Osma Alum Block, 2.65 Ounce - Image 1](https://m.media-amazon.com/images/I/51e10A7JGHL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Does this come with a plastic storage case like other brands?** A: No need for a case. The box that it comes with is wax coated and it hold up perfectly, even wet. I purchased my Alum block back in 2010 and it is still stored in the original box in my medicine cabinet. BTW, I'm writing this Dec 2022 and it's the original Alum block from 2010, this thing last forever. **Q: Afer shaving do you put moisturizer before or after applying alum?** A: I apply the alum on first. I wet it with cold water, gently rub it all over my fresh shaven face, and wait about 30 seconds before I splash cold water on my face. I'll pat dry then apply aftershave. **Q: Can someone please provide a link to a plastic box that will fit this block? I got the alum block, but I am now looking for a container** A: The block dries easily. I just pat it dry when I am through using it and put it back in the original box for next time. **Q: Do I need to rinse this off my face after applying?** A: No. I apply the block and then use aftershave. No need to rinse. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Imagine how much the bacteria would hate to live on a solid block of the stuff *by J***. on April 23, 2016* I use this block as both an underarm de-odorizer and an aftershave treatment on my face. Yup. I use the same block for both. The reason it works on your pits is because it creates a hostile environment for odor causing bacteria. That's just by getting its residue on your skin. Imagine how much the bacteria would hate to live on a solid block of the stuff. Thus, it takes on no odor and does not cause any bacterial razor bumps or anything. As an aftershave treatment, it stops bleeding from tiny cuts and weepers that are not leaking much, and it disinfects the whole surface that it is applied to. For a substantial cut, it won't stop the bleeding and you will need a styptic pencil, so if you have a tendency to hack your face up, this won't be your best solution. However, you will find this soothing as a daily application, so it should definitely be a part of your tool kit. This is good for what it's good for, and the styptic pencil handles the rest. Keep both on hand. As a deodorant, it surprises me how effective this is. I use it daily, and it prevents odor all day if I don't sweat, or a partial day if I do. This is not an anti-perspirant, so if you decide to go out and chop some wood, don't be surprised if you need to reapply some alum. Or you can do what I do, which is keep a stick of deodorant around for emergencies. As it is though, I would say this works better than the organic deodorants I have had to use for years because of skin allergies to anti-perspirants. This is a solid chunk of alum, so it isn't wearing down much. I think this thing could probably last a couple years with daily use. I want to point out that this does not leave a visible residue on your face. You do not need to rinse or wipe it off. I apply it while my face is still wet after I rinse off my shaving cream remnants, and I let it dry. Then I put on an aftershave splash and lotion and head out the door. ### ⭐⭐⭐⭐⭐ Good quality *by C***3 on June 9, 2026* Well, seems to be a solid block. Don't drop it on a hard floor! This is my favorite Alum Block tested to date because it seems to be a pure solid block! Works perfectly for me ### ⭐⭐⭐⭐⭐ Finally found a quality Alum block! *by J***E on August 6, 2024* I got tired of other brands that are made of inferior grade minerals, or of powder that’s pressed together only to eventually start crumbling with frequent use. This is by far the best quality alum block I have ever used. I’ve even forgotten to dry it off on numerous occasions, but it just keeps going without any issues. It may cost a bit more but it’s worth it to me to not have to throw away broken chunks that start to break down which is basically the same as wasting money. My only minor gripe is that this is a much smaller block than i thought it would be. It is fairly small compared to some of the more inexpensive alum blocks I’ve used, and there is no storage case of any kind for travel so I use a small Rx pill bottle to keep it in once it dries. Even so, I will be buying some again! ## Frequently Bought Together - Bloc Osma Alum Block, 2.65 Ounce - Astra Platinum Double Edge Safety Razor Blades,100 Blades (20 x 5) - Proraso Shaving Soap --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tw/products/1534650-bloc-osma-alum-block-2-65-ounce](https://www.desertcart.tw/products/1534650-bloc-osma-alum-block-2-65-ounce) --- *Product available on Desertcart Taiwan* *Store origin: TW* *Last updated: 2026-09-01*