People have always associated water with purity, health and treatment. This cultural instinct is so powerful that most people still believe that “water hydrates the skin”. Yet all the available scientific data agrees on one thing: water applied to the epidermis does not hydrate. On the contrary, it encourages dehydration, weakens the skin barrier, disrupts its microbiota and accentuates feelings of tightness. The misunderstanding is an old one, but it still shapes beliefs, everyday practices and even some marketing discourse in the world of skincare.
Here, we offer the most rigorous possible review of international dermatological literature to explain why water components in their raw state are not conducive to good skin health. We will also explore the mechanisms of water-induced dehydration, the central role of the hydrolipidic film, the impact of hard water and non-bioavailable minerals, and the consequences of these harmful elements on skin ageing. Finally, we’ll take the opportunity to address a central point inherent in a major technological breakthrough: hyperionisation, an innovation born from over twenty years of research and development that transforms water’s compatibility with skin in a totally natural way.
Although essential to life, water is not naturally adapted to the surface of our skin. The epidermis is a protective structure whose main function is to regulate the exchange of water, in order to prevent excessive loss. The skin is therefore biologically programmed to repel external water intake, not to absorb it naturally. This scientific fact clearly contradicts the idea of “water hydration”.
The role of the epidermis is to act as a barrier. The stratum corneum, made up of corneocytes held together by corneodesmosomes contained in a hydrolipidic matrix, forms a robust and relatively hydrophobic assembly. Its architecture often resembles the image of a “brick and cement wall”: the cells act as bricks, and the successive hydrolipidic layers as the cement that binds them together.
This barrier strongly limits the diffusion of hydrophilic molecules, including water molecules. Several studies published in the Journal of Investigative Dermatology show that healthy skin allows less than 1% of surface-applied water to penetrate, even after prolonged immersion. The primary function of the stratum corneum is to maintain homeostasis, not to absorb liquids.
After coming into contact with water, the skin temporarily “swells”. As it dries, however, it “collapses”: lipids tighten too quickly, increasing transepidermal water loss (TEWL). Studies report a 30-40% increase in TEWL within ten minutes of a hot shower.
So water doesn’t hydrate: it causes instability in the skin barrier, worsening dehydration.
The hydrolipidic film is the skin’s first line of defense. It combines water, free fatty acids, cholesterol, ceramides and sebum. It plays a crucial role in slowing down internal evaporation and protecting the skin from external aggression. Water directly disrupts this fragile balance.
Each shower temporarily dissolves some of the lipids. A 2020 paper in Dermatitis observed a 20% reduction in surface lipids after a five-minute wash with hot water. This disruption alters the cohesion of the stratum corneum, weakening its barrier function and clearly paving the way for increased dehydration.
People suffering from atopic dermatitis, eczema, psoriasis or simply chronic dryness often notice an exacerbation of their symptoms after coming into contact with water. This is no coincidence: the more fragile the barrier, the more visible and perceptible the drying effects of water.
The warmer the water, the more harmful the effect. At 38°C and above, lipid liquefaction intensifies, which goes some way to explaining tightness after contact with water. Similarly, frequent showers maintain a vicious circle of progressive drying. However, in high-end hotels, wellness or residential environments, users seek regular and prolonged contact with water, which mechanically accentuates the drying effect.
So-called “hard” water, rich in calcium and magnesium ions, accentuates skin damage. According to a study published in Allergy, children growing up in hard-water areas are 87% more likely to develop atopic eczema. The irritating effect of hard water is not linked to the molecules themselves, but to their form: aggregated, poorly soluble minerals, which leave an ionic residue that strongly disrupts skin pH.
Calcium and magnesium are deposited in microcrystals on the skin after drying. They stiffen the stratum corneum, increasing friction and contributing to a feeling of roughness. This mineral deposit reduces the skin’s ability to retain its own lipids, resulting in a perceptible loss of elasticity just minutes after showering.
The skin has a naturally acidic pH (between 4.7 and 5.5), essential for the balance of the skin microbiome. Tap water often has a higher pH, generally between 7 and 8, sometimes even higher. This temporary alkalinisation disrupts the protective acid barrier, increasing the proliferation of certain unwanted bacteria and reducing the skin’s capacity for self-repair.
These disturbances create a breeding ground for dryness, irritation, redness and premature ageing of skin tissue.
Washing the face or body gives an immediate sensation of freshness and, at first, suppleness. But this feeling is deceptive. It stems from the fact that water temporarily swells the corneocytes, giving the impression of plumper skin. But once evaporated, the skin shrinks violently, resulting in less hydration than initially. Momentary relief is therefore a “sensory false positive”.
The belief is also fuelled by the intuitive idea that water is beneficial in all circumstances, since it is the main component of most internal biological tissues. This shortcut completely ignores the distinction between internal (circulating) and external (skin-contact) water.
This myth has been reinforced by the cosmetics industry’s historical discourse, which has long played on the ideals of pure water, freshness and hydration. However, modern cosmetics are based on lipophilic active ingredients, capable of penetrating the skin barrier far more effectively than water.
One of the major drivers of skin ageing is the alteration of the hydrolipidic film and the progressive loss of internal water. Regular contact with water accelerates this depletion, as it weakens lipids, increases TEWP and stimulates harmful chronic inflammatory processes.
Molecular biology studies show that repeated exposure to hard water promotes the production of pro-inflammatory cytokines in the epidermis. This mild but chronic stress accelerates the degradation of structuring proteins, notably filaggrin and ceramides, two key markers of young, functional skin.
Hard water also makes the skin more sensitive to thermal variations, aggravating redness, micro-inflammation and loss of radiance.
Ageing, in this context, is not just a matter of time: it becomes the repeated consequence of daily exposure to an element wrongly considered neutral.
If water isn’t hydrating, beneficial or compatible, the essential question is: can we help it become so?
For decades, science has said no. Water could not be chemically modified without becoming unsuitable for consumption or compliance with health standards. Therefore, any transformation was to be ruled out.
Research into high-frequency vibration has broken new ground, demonstrating that it is possible to rearrange the molecular structure of certain minerals naturally found in water without altering its chemical composition. This high-frequency resonance approach combines physics, biochemistry and genomics to create water that is highly compatible with the skin.
It was against this backdrop that hyperionisation was born!
The research that led to hyperionisation technology highlighted a central point: the minerals present in water are very poorly bioavailable to the skin. They are too aggregated, too large, too heavy and too insoluble. By polyfragmenting them through high-frequency resonance, Sublio technology radically alters their spatial organisation, not their chemical composition.
This polyfragmentation increases their interaction surface and their ability to come into contact with the stratum corneum without causing irritation – quite the opposite, in fact. It’s a gentle, non-intrusive molecular transformation, but a decisive factor in skin compatibility.
The results measured on human skin explants are particularly significant. Several ex vivo studies and genetic analyses have demonstrated a significant improvement in key parameters:
These results clearly explain why hyperionised water provides a enveloping feel, softness and immediate comfort, while demonstrating instantly measurable skin effects.
Hyperionisation resolves a long-standing paradox: water no longer dries out the skin, but actually helps to repair it.
Hyperionised water does not modify the epidermis by penetration, but by compatibility. It creates a more harmonious ionic environment, supports beneficial molecular interactions, inhibits disruption of the hydrolipidic film and clearly hydrates the skin when bathing or showering.
The skin is no longer attacked – it is supported.
Water is not good for the skin: this claim is rigorously demonstrated by scientific literature. It doesn’t hydrate, it dries, it weakens, it irritates and accelerates skin ageing. This observation opens up a fundamental requirement: to reconcile skin with water itself.
This is where hyperionisation represents a major breakthrough.
Sublio does not chemically modify water. Instead, it momentarily rearranges its mineral structures to unlock previously unimagined biological potential. Ex vivo studies, genetic analyses and bioavailability tests have demonstrated a reality that can now be measured: water that is highly compatible, energising, truly hydrating and, last but not least, conducive to cell regeneration.
Water is no longer an aggressive, drying element, but finally the active vector for skin well-being that we’ve all been waiting for.
It’s this profound, tangible and proven scientific breakthrough that makes Sublio a revolutionary, world-first innovation!
