Water is unquestionably one of the most important factors that influences human health. Not only does it compose most of our organs and fluids, but it also acts as a molecular basis through which many bodily functions occur. One such function is keeping the skin moisturized. Some celebrities, aestheticians, and even dermatologists attribute healthy looking skin to regular and heavy water drinking, and science supports this simple home remedy with evidence from cellular biology.
Healthy and glowing skin
Proper hydration is not only crucial for proper health, but it is critical for achieving healthy, glowing skin. The skin is composed of 4 main layers. Beginning at the bottommost layer and moving outside, the stratum basale, stratum spinosum, stratum granulosum, and stratum corneum are observable. The stratum corneum is most strongly related to the ability to retain water, and corneocytes contain hygroscopic compounds referred to as natural moisturizing factor (NMF). When hydrated, they contribute to the smooth sensation of the skin surface. Moreover, much of the soluble NMF is washed out of the skin with common cleaning agents. Outside humidity also impairs the function of crucial enzymes that prevent the skin from drying out. UV radiation and age contribute to dryness as well. Interestingly, the water content between the stratum granulosum and stratum corneum drops sharply (from about 70% to 55-40%). Such differences in water content isolate the stratum corneum from the rest of the body, triggering certain proteins, lipids, and enzymes to fulfill their function of hydrating the skin.
The power of water
We know the epidermal components associated with moisture control in the skin, but the direct association of water intake and these components was not clear. There is yet a lack of technological advancements that would allow this kind of assessment. Though the relationship between water and cellular biomechanics remains vague, water plays a crucial role as a cellular lubricant, decreasing the friction between fibers, and polar solvent which allows certain vital functions to occur. Studies have shown that increasing water intake acts in a manner similar to a topical moisturizer. However, more hydration was observed in the lower levels of the skin as well as the surface levels due to a higher level of water available for physiological purposes.
You can’t go wrong!
You can’t go wrong with drinking water. It’s almost like eating your vegetables- healthy for every part of your body- but even more important! Sometimes that superficial dryness of the skin and excess oil production can be treated with the simple fix of drinking more water.