---
product_id: 38042457
title: "Osma Extra Large 230g 100% Pure Potassium Alum Natural Deodorant & Astringent, Made in France (Bulk Packed - No Packaging or Labelling)"
brand: "la la lash"
price: "FREE"
currency: EUR
in_stock: false
reviews_count: 8
category: "Beauty"
url: https://www.desertcart.fi/products/38042457-osma-extra-large-230g-100-pure-potassium-alum-natural-deodorant
store_origin: FI
region: Finland
---

# Superior water retention for lasting effect 230g extra-large pure alum stone Hand-formed in France craftsmanship Osma Extra Large 230g 100% Pure Potassium Alum Natural Deodorant & Astringent, Made in France (Bulk Packed - No Packaging or Labelling)

**Brand:** la la lash
**Price:** FREE
**Availability:** ❌ Out of Stock

## Summary

> 🧊 Stay Fresh, Stay Bold — Naturally French, Naturally You

## Quick Answers

- **What is this?** Osma Extra Large 230g 100% Pure Potassium Alum Natural Deodorant & Astringent, Made in France (Bulk Packed - No Packaging or Labelling) by la la lash
- **How much does it cost?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/38042457-osma-extra-large-230g-100-pure-potassium-alum-natural-deodorant)

## Best For

- la la lash enthusiasts

## Why This Product

- Trusted la la lash brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual-Action Formula:** Works as a natural deodorant and soothing post-shave astringent.
- • **Bulk Size, Bulk Power:** Generous 230g stone means longer-lasting freshness without constant repurchase.
- • **Eco-Friendly Minimalism:** Bulk packed with zero packaging or labeling—perfect for the conscious consumer.
- • **Hydration Lock Technology:** Superior water retention ensures smooth, effective application every time.
- • **Artisanal French Craftsmanship:** Hand-formed in France for unmatched quality and authenticity.

## Overview

Osma’s Extra Large 230g Potassium Alum Stone is a 100% pure, hand-formed natural deodorant and post-shave astringent made in France. Its superior water retention and bulk size deliver long-lasting freshness and soothing care without synthetic chemicals or packaging waste.

## Description

Laboratoires Osma&apos;s alum is the world&apos;s best potassium alum for use as a post-shaving astringent or a natural deodorant, and they are entirely made by hand in Craponne, France. Laboratoires Osma&apos;s alum stones wear away evenly, without breaking down in a granular fashion, and they contain a higher percentage of weight in water than any other alum stone on the market, which makes their application both upon the face and under the arms more comfortable. This stone is approximately 230 grams of net weight and is hand-formed into a semi-spherical shape. It can be used for either post-shaving or for deodorant use; these do not come with instructions, but the use is rather straightforward, for deodorant you apply some light amount of water to the top of the cylinder and rub on the area to be protected until the water is absorbed by the salt, while for shaving you will leave your face wet after the shave and simply gently move the stone down and around the shaved area, let sit for 30 seconds or so, and splash off with some cold water. Bulk packaged and shipped. Fragile-do not drop. Handmade in France.

## Features

- Bulk Packaged - No Packaging or Labeling
- Hand-Formed Alum Stone Measuring Approximately 2.4 x 2.25 Inches
- Useful as Deodorant; Wet Stone and Apply to Underarm Until Water is Absorbed
- Useful as Post-Shaving Astringent; Apply with the Hair Growth Pattern to the Wet Face After Shave
- Superior Water Retention Versus Other Alum Stones - Handmade in France

## Images

![Osma Extra Large 230g 100% Pure Potassium Alum Natural Deodorant & Astringent, Made in France (Bulk Packed - No Packaging or Labelling) - Image 1](https://m.media-amazon.com/images/I/414F8X7iSHL.jpg)
![Osma Extra Large 230g 100% Pure Potassium Alum Natural Deodorant & Astringent, Made in France (Bulk Packed - No Packaging or Labelling) - Image 2](https://m.media-amazon.com/images/I/41akKo-rLbL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Five Stars
  

*by S***R on Reviewed in the United States on September 3, 2017*

It's getting the effects that I most desire

### ⭐⭐⭐⭐⭐ 







  
  
    The BEST natural deodorant I've ever tried.
  

*by A***3 on Reviewed in the United States on May 26, 2017*

Wanting to get away from chemicals and additives in regular deodorants as well as wanting to get away from the often astronomically priced natural deodorants, I decided to give the old fashioned alum a try, after doing some research on some shaving/grooming blogs. Naturally, I was a little skeptical- after all, it seems almost too simple to work effectively, especially in such a sensitive area (so many "natural" deodorants caused a rash). After a month of using it, I'm officially a convert. It's cheaper that alternatives, gives a full day of deodorizing, doesn't leave any residue, and hasn't caused any skin irritation at all. Just wet it, make a few quick passes down your underarms, dry the alum, and you're ready to go. One caveat though: I did accidentally drop it in the bathroom sink and some small chips did break off (after all, alum is a little brittle); however, with such an ample size, a few chips are hardly noticeable. Overall, this is an affordable, lasting product from well-known brand that actually does the job.

### ⭐⭐⭐⭐⭐ 







  
  
    I got this because it seemed like a good idea without much hope that it would ...
  

*by N***E on Reviewed in the United States on September 9, 2018*

I got this because it seemed like a good idea without much hope that it would for me.  I have been using extra strength, clinical strength whatever is the most industrial I can find but hating the chemicals, the expense and the packaging.  I am blown away.  This actually works great.

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**Shop now:** [https://www.desertcart.fi/products/38042457-osma-extra-large-230g-100-pure-potassium-alum-natural-deodorant](https://www.desertcart.fi/products/38042457-osma-extra-large-230g-100-pure-potassium-alum-natural-deodorant)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-07*