deodorant natural alum stone

Pierre d'alun marbrée Grade A
deodorant naturel pierre d alun

This deodorant natural ALUM STONE of mottled brown appearance and selection grade A +. This alum stone native to Panama, renamed for its alum natural transparent, embodies a purity without equal.

Pierre d'alun marbrée Grade A


Check out the alum stone transparent selection Grade of A+, also known under the name of Kalunite™, the purest in the world and approved by 100 % by Ecocert Cosmos Natural.

This mineral asset is widely used in various cosmetic products, such as deodorants, soaps, care, after shave, shampoo and creams.

Instantly recognisable thanks to its marbled appearance and slightly transparent, it is the embodiment of purity in its most natural form. 

In the Kosmetikon of Cleopatra, we have already spoken of crystals of alum transparent, which were valued in cosmetics.

Pierre d'alun marbrée Grade A
Avoid the impurities!

The alum stone is mainly intended to be applied under the armpits, where the skin is particularly delicate. At this point, any impurity could create skin reactions. This is why, in Verdan one chooses that of the alum stone that has been specially selected for its high purity. This purity can be recognized by the transparency of the stone. On the image, below, you enjoy various high quality stone alum. These are all stones alum potassium. The two stones on the right are of high purity because we can see a little transparency so that the two stones on the left are opaque. The purity of the mineral depends on several factors such as its origin, extraction, preparation, and its final selection.



Our best alum is the one selected quality Grade A+. It is extracted from the very heart of the crystal where the block of alum is pure. It is easy to recognize by its mottled brown appearance and its appearance is somewhat transparent. Its level of translucency is 20>5 according to our scale.


Alum opaque. It is characterized by an aggregate of alum with the aspect of a mass-opaque with a level of translucency of 4>1. It may contain impurities. 


Alum crude residue from the base of the block is distinguished by its purity least, its white appearance and its total lack of translucency. This is the part the most basic of alum and can contain many impurities.

transparency and shatter the mineral


pierre d'alun fabricant d'alun transparent

Alum may contain impurities natural, such as the hydroxide, aluminum and other metals. These impurities must be avoided.  

These impurities give the stone an opaque aspect that you should avoid, hence the importance of our selection.


alum stone - how it works

The protective action of the alum grade A+ against bad odour is an action slightly bactericidal surface of the skin, and therefore non-intrusive. Everything happens on the surface without the need to penetrate your skin contrary to the anti-transpiring traditional.  

alum natural cosmetics
discover our deodorants

Alum has been recognized since Antiquity for its properties déodorantes, astringent and antiseptic. It neutralizes the odor-causing bacteria without penetrating the skin. To meet all preferences, we offer a range of formats : raw stone, stick, spray and roll-on.

discover our foot care

The application of the alum stone on the feet is particularly beneficial for athletes. It is recommended to reduce the risk of injury due to friction. To keep your feet dry, apply it in the morning before you put on your socks and your shoes. We offer two formats for a practical application : powder and spray

discover our after-shave

The barbers appreciate the stone to shave for his calming after the fire's edge. Thanks to its hemostatic properties, antiseptic and astringent, it helps to stop the bleeding related to micro-cuts and limit the appearance of small buttons, as well as the incarnation of the hair.

alum stone without ammonium

There are several kinds of alum stone, most of them are natural other synthetic. It detects an alum stone synthetic by its name. If it is the ammonia then it is a stone of alum synthetic. All deodorants Verdan are guaranteed to be natural and without ammonium.