Boí Thermal


Provides a pleasant feeling of comfort.


What is Clay?

Though it may look like it at first glance, clay is not just soil. Clay, which is mineral in origin, is soil with incredibly fine grains (smaller than 0.0039 mm in diameter). It comes from the erosion of rocks that are rich in the mineral feldspar (aluminium silicate).

Therefore, it is used in cosmetics for its natural therapeutic properties.

Discover its properties

Clay is detoxifying, regenerative, revitalising and healing, thanks to one of its main components: silica. Thanks to its high content of trace elements, it is highly remineralising.

Clay absorbs excess sebum and impurities from oily skin. It provides brightness and balance to dry skin.

Due to its rich aluminium composition, clay is also a powerful disinfectant and antimicrobial agent.

Why use Clay in your cosmetics routine

In addition to controlling excess sebum in oily skin and other skin issues, clay revitalises the skin through an authentic flash effect. Provides the skin with vitality and brightness.

At Boí Thermal, we’ve focused on the most therapeutic effect and have added clay to our thermal mud Sulphatherm, which is specially indicated for psoriasis and dermatitis.

You can find this amazing ingredient in:



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