Thermal water sprays have become a staple in skincare routines: they soothe, refresh, and deliver minerals with recognised benefits to the skin.
However, an essential question arises: do these minerals actually penetrate the skin, or do they simply evaporate on the surface without providing any lasting benefits?
As we become increasingly mindful of the efficacy of the products we use, understanding their true impact on the skin is crucial.
Thermal water sprays: how do they work on the skin?
Naturally rich in minerals and trace elements with soothing, anti-irritant, and anti-inflammatory properties, thermal water is a popular skincare ingredient. However, for an active ingredient to be effective, it must be absorbed and act at a deeper level. Yet, the skin does not absorb water as easily as one might think.
Why doesn’t thermal water provide lasting hydration?
A natural barrier limiting penetration
The epidermis, particularly the stratum corneum, is designed to prevent the penetration of hydrophilic substances such as water. Only lipophilic molecules or those encapsulated in specific structures can effectively cross this barrier.
Rapid evaporation
Once sprayed, thermal water remains on the skin’s surface for only a few seconds before evaporating. This evaporation can lead to transepidermal water loss (TEWL), reducing its hydrating effect.
Without a mechanism to bind water and its minerals to the skin, the benefits of thermal water sprays remain superficial and temporary.
The limitations of thermal water sprays
- No prolonged hydration: Thermal water alone cannot lock in moisture without binding agents.
- Surface-level action: Minerals remain on the skin’s surface and vanish with evaporation.
- Short-lived effect: It provides an instant cooling sensation but does not deeply nourish the skin.
A new generation of dermatological waters for optimised efficacy
To overcome the limitations of conventional thermal waters, laboratories have developed enriched dermatological waters, incorporating binding agents and bioavailable actives.
Unlike traditional thermal waters, they:
- Contain humectants (such as glycerine and hyaluronic acid) to retain moisture on the skin.
- Use advanced absorption systems to maximise the effectiveness of minerals.
MineralX™: an innovation beyond simple enriched waters
MineralX™ stabilises, binds, and optimises the assimilation of essential minerals by the skin.

How does MineralX™ work?
- Encapsulation of minerals for improved skin penetration.
- Enhanced fixation with a film-forming complex that limits evaporation and prolongs hydration.
- Deep action to make minerals bioavailable and beneficial over time.
Key benefits of MineralX™:
- Long-lasting and effective hydration.
- Optimised mineral absorption for stronger, healthier skin.
- Protective and soothing action that restores skin balance.
Do thermal water sprays still have a place in skincare routines?
While thermal water provides an instant refreshing sensation and has soothing properties, its effects remain fleeting. Without a fixation mechanism, it evaporates quickly, limiting its efficacy in hydration and skin nourishment.
Scientific advancements now allow us to go further. By integrating fixation and optimised absorption technologies, MineralX™ transforms each spray into a true active skincare treatment, delivering prolonged hydration and enhanced protection.
The era of simple thermal waters is reaching its limit. For truly hydrated and fortified skin, it’s time to embrace a new generation of skincare designed to work deep within the skin and provide long-lasting benefits.