Adult women show a reduction in sebum secretion and with age the protective function of the skin barrier is gradually reduced. With the cold, the drying of the skin in a low humidity environment is accompanied by physiological distress or cellular stress. This study by dermatologists from Nihon Fukushi University shows that spraying fine particles of water on the skin of the face can significantly and sustainably increase the water content of the corneal layer. Results presented in the journal Skin Search and Technology which therefore recommend a simple gesture to better protect your skin from the effects of the cold.
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The Japanese researchers examined skin conductance, transepidermal water loss, and skin elasticity to assess the skin barrier function of the skin at the cheek level in 17 healthy adult women. These women received a spray of fine water particles on the cheek, at an ambient temperature of 24°C and in an environment of 34.5% humidity. Experience shows that:
- the skin conductance of the stratum corneum after 120 minutes of spraying water particles of size <0.5 μm amounts to 119.7 ± 25.1%, of size <1.8 μm amounts to 100, 4 ± 31.7%, size <5.4 μm rises to 110.1 ± 25.0%;
- the set of measurements suggests that spraying the finest water particles (<0.5 µm) is significantly more effective on skin conductance and skin elasticity, the risk of trans-epidermal water loss ;
- a spray of water particles <0.5 µm allows skin conductance to be maintained at its initial levels for up to 360 minutes after spraying.
These extremely precise results, which will probably not find translation in real life , suggest that by spraying the smallest particles of water, it is possible to recover the skin barrier function at the level of the cheek and after exposure to cold. More generally and more practically, spraying water on the face promotes hydration of the skin in a cold and low humidity environment and helps prevent dysfunction of the skin barrier.
The advantages are all the more significant as the diameter of the fine particles of water sprayed corresponds better to the intercellular spaces of the skin. A fogger will therefore be more effective for the health of the skin than an air humidifier, specify the authors.
Finally, it should be noted that these data were obtained … after 2 hours of spraying.