That large amount of air is also faster Y drying machinesays board-certified dermatologist Cynthia Bailey, MD, founder of Dr Bailey Skincarewhich can create a perfect storm for dehydration: As a large amount of dry air passes through the lungs without the necessary filtering, research shows that people can experience a net water loss of 42% just by breathing through the mouth. Theoretically, this is why you may wake up in the morning with a dry mouth or chapped lips, especially if you are one of those who fall asleep with your mouth open.
But let’s back up for a moment. How do we make the leap from whole body water loss to skin dehydration? Studies have shown that internal hydration can affect skin moisture levels and dermal thickness, but the exact relationship is still a bit fuzzy. (That’s why the advice to “just drink more water” causes your eyes to automatically roll back; properly hydrating your skin requires much more effort).
“While there may not be data to directly correlate these particular statistics, we do know that transepidermal water loss (TEWL) affects skin barrier integrity and function, which can contribute to inflammation, redness, and inflammation. irritation,” says the certified board. dermatologist Dr. Keira Barr There is data suggesting, however, that mouth breathing is associated with asthma, skin allergies and eczema—and people with these conditions are prone to increased TEWL and dry skin, a coincidence that’s hard to ignore. The skin is also more permeable at night., which means that it is already vulnerable to water loss; breathing through the mouth, it seems, only adds more fuel to the fire.
What’s more: “Breathing through your mouth not only dries out your mouth, but doing so helps eliminate the first line of defense against oral bacteria,” says Barr. “This is a problem not only because it contributes to bad breath and cavities, but it can also affect the downstream gut microbiome, since the mouth is the gateway to gut health—and we know how intimately linked gut health and skin health can be.”
Finally, mouth breathing can also contribute to poor sleep quality, as it draws the tongue back toward the upper palate of the mouth, obstructing the airway and limiting the amount of oxygen it receives. And “restorative sleep” is a great thing: during the nightly sleep cycle, there is a huge increase in HGH (human growth hormone), which helps rebuild body tissues and stimulates increased cell production to replace cells that were damaged during the day. If you don’t get enough sleep, your skin cells don’t regenerate as much during this recovery process. A buildup of damaged cells follows, which can make your skin look dull, dry, and congested.
So yes, there is limited research on mouth breathing and skin care results specifically, but if you take a look under the hood, it’s not hard to make the connection. As Barr points out, “While serums, lotions, and potions can help, true healing occurs when we go beyond the surface and address what’s going on below the surface.”