What is "Illite" and what is its usefulness?

Clays are sedimentary rocks derived from the degradation of the parent rock. The characteristics of clays vary depending on the nature of the parent rock and environmental conditions.

Illite, or green clay, primarily results from the degradation of basic magnetic rocks under the influence of a cold climate. It takes its name from the American state of Illinois, where it was first described in 1937. It is composed of three layers of phyllosilicates, a layer of aluminium (Al) surrounded by two layers of silicate (Si). It also contains other minerals such as potassium, magnesium, iron, etc.

Illite is obtained through extraction from a natural quarry, followed by a crushing and fine grinding process. No chemical reactions occur. Only a subsequent heat treatment is necessary to prevent microbiological contaminations.

Thanks to its structure of separated layers with interlayer spaces (a "lamellar" structure), illite has excellent absorbent propertiesIt is capable of capturing impurities and bacteria present on the skin and also on the scalp... Moreover, it also absorbs excess sebum. This property makes it particularly relevant for the care of oily, acne-prone skin and greasy scalps.

Furthermore, the presence of mineral salts on the surface of this compound gives it a negative charge. In solution, the negative charges attract the positive ions present on the skin's surface. This ionic exchange contributes to the remineralisation and detoxification of the skin.

It is also noteworthy to mention the deodorising effectiveness of green clay. It neutralises odours and absorbs excessive perspiration, thus justifying its inclusion in certain deodorants.