---
product_id: 255729944
title: "Osma Bloc - Alum Block 75g (Soothes Shaving Irritation)"
brand: "osma"
price: "฿1653"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/255729944-osma-bloc-alum-block-75g-soothes-shaving-irritation
store_origin: TH
region: Thailand
---

# 75g pure potassium alum block Instantly stops shaving nicks & bleeding Authentic French-made skincare Osma Bloc - Alum Block 75g (Soothes Shaving Irritation)

**Brand:** osma
**Price:** ฿1653
**Availability:** ✅ In Stock

## Summary

> 🧊 Stay sharp, soothe smarter — the French secret to flawless post-shave care!

## Quick Answers

- **What is this?** Osma Bloc - Alum Block 75g (Soothes Shaving Irritation) by osma
- **How much does it cost?** ฿1653 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/255729944-osma-bloc-alum-block-75g-soothes-shaving-irritation)

## 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

- • **Chill & Heal:** Soothes razor burn and irritation with a cooling touch
- • **Bleed No More:** Powerful astringent action to quickly stop shaving cuts
- • **Clean & Natural:** Chemical-free, mineral-based formula for sensitive skin
- • **Compact & Durable:** Perfectly sized 75g block for lasting daily use
- • **French Craftsmanship:** Trusted quality from Osma Laboratoires, made in France

## Overview

The Osma Bloc Alum Block is a 75g pure potassium alum crystal from France, designed to soothe shaving irritation and stop bleeding instantly. Compact and durable, it offers a natural, chemical-free solution trusted by professionals to calm sensitive skin after every shave.

## Description

Osma Bloc - Alum Block 75g (Soothes Shaving Irritation)

## Features

- Soothes shaving irritation
- 75g Block of Potassium Alum
- Can be used to soothe irritation post shave or as an astringent to stop bleeding
- Made in France

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Osma Laboratoires |
| Item model number | BLOC1 |
| Product Dimensions | 3.81 x 2.54 x 5.72 cm; 68 g |
| ASIN | B004NEHR28 |

## Product Details

- **Brand:** Osma
- **Item form:** Alum stone
- **Material type free:** Allergens, Irritants, and Other Substances Free
- **Skin type:** All types
- **Number of Items:** 1

## Images

![Osma Bloc - Alum Block 75g (Soothes Shaving Irritation) - Image 1](https://m.media-amazon.com/images/I/51e10A7JGHL.jpg)

## 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.

## 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

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**Shop now:** [https://www.desertcart.co.th/products/255729944-osma-bloc-alum-block-75g-soothes-shaving-irritation](https://www.desertcart.co.th/products/255729944-osma-bloc-alum-block-75g-soothes-shaving-irritation)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-23*