What is thermal water?
Thermal water is natural water located deep underground, whose properties are determined by prolonged contact with different geological layers. As it travels through rock layers, the water naturally becomes enriched with mineral salts and trace elements, so the composition of thermal water from different sources can vary. Reviews of studies indicate that thermal water contains substances such as calcium, magnesium, sodium, sulfates, chlorides, bicarbonates, and other trace elements.
Due to its mineral composition, thermal water can be beneficial not only for refreshing and moisturizing the skin but also for maintaining its protective function and comfort when exposed to everyday external irritants. Research shows that thermal water of certain compositions is associated with skin comfort, moisture balance, and maintaining the skin barrier function. However, it is important to remember that the mineral composition of thermal water varies between sources, so their properties and research results differ as well.
How does thermal water affect sensitive skin?
Sensitive skin more frequently reacts to external irritants – temperature changes, wind, sun, hard water, cosmetic ingredients, or overly intense cleansing. Therefore, it is important to choose not only effective but also well-tolerated products for its care.
In scientific literature, thermal water is described as potentially having soothing, anti-inflammatory, antioxidant, moisturizing, and skin barrier-supporting properties. Research data suggest that thermal water of certain compositions can be beneficial for sensitive, reddened, and irritated skin, helping to maintain the natural skin barrier function.
Benefits for combination, oily, and mature skin
Although thermal water is most often associated with the care of sensitive and irritated skin, it is important to emphasize that its potential benefits are not limited to this skin type. Studies show that thermal water can be relevant for combination and oily skin due to its soothing and possible anti-inflammatory properties – especially when products used for oily or acne-prone skin begin to dry and irritate it. Thermal water is also studied as an additional aid in caring for skin affected by acne and seborrhea, with results describing changes in skin condition and comfort.
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For mature skin, other properties of thermal water are relevant – potential moisturizing and antioxidant effects, as well as the ability to support the skin barrier. This is important for skin that becomes drier with age, loses some elasticity, and recovers more slowly from external factors. Of course, thermal water should not be considered a standalone remedy for wrinkles – it is an additional natural ingredient that supports skin comfort, moisture, and protective function.
“Jonzac”: thermal water as the basis of cosmetic formulas
One of the brands that highlights thermal water in its dermocosmetics is “Eau Thermale Jonzac.” The cosmetic creators themselves describe the thermal water used as the main ingredient in all “Jonzac” skincare formulas as richly mineralized and isotonic. Isotonicity means that the mineral concentration in the water is close to that of blood plasma. According to “Jonzac,” this property helps ensure good compatibility between water and the skin cell environment and gentle hydration.
“Jonzac” thermal water is extracted at a depth of 1850 meters in the Charente-Maritime region of France. Cosmetics based on it are focused on caring for sensitive, reactive, and irritated skin. The line for sensitive skin emphasizes the combination of thermal water with gentle formulas, and products are developed considering the needs of sensitive skin to ensure good tolerance and comfort. An additional quality indicator is the certification of these cosmetic products according to the COSMOS ORGANIC standard and the “Cosmébio” label.
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