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15th September 2023
04:19pm BST

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Speaking to Allure, Marc Anthony hair care's artistic director, Marilisa Sears, says she was told not to do this as it could result in fungal and bacterial infections, which, in turn, could lead to an itchy scalp and dandruff.
Following this warning, a range of dermatologists weighed in and confirmed that when we add sopping or damp, wet hair to a pillowcase laced with dead skin cells, makeup, and natural oils, the concoction is the stuff of nightmares.
"Certain bacteria and fungi thrive in warm, moist environments and so will proliferate on scalp skin if it stays damp for hours," Noëlle Sherber, a Washington, D.C.-based board-certified dermatologist, told the publication.
It is most common for a yeast called Malassezia (even the name is awful) to fester on the scalp, which will lead to flakiness that can be misidentified as dandruff. If you're unsure, she recommends seeing a dermatologist.
Another reason to often put your wet tresses on your pillow is that it could result in small acne bumps or pustules (just trust me, you don't want them), which can become itchy or painful to live with and are more commonly known as bacterial or fungal folliculitis.
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Credit: Getty[/caption]
Dr. Sherber, however, tells the outlet that this is relatively common and happens when our hair follicles have become inflamed. As it is tricky to self-diagnose, seeing a dermatologist is recommended if you find yourself experiencing symptoms.
Now, before you think that's all, unfortunately, it's not. What can occur on your scalp from having a wet bedhead can also pop up on the face as fungal acne, as well as the upper body, especially if you have longer hair that may shuffle against your shoulders, neck, back, or beyond.
"I've diagnosed patients with this and traced the cause to their sleeping with their face on a damp pillow caused by going to bed with wet hair," Dr. Sherber explains.
This presents as small red bumps, which may look like acne if caused by Malassezia. Similar to the scalp, it is a form of follictus.
Next time I hit snooze and think, 'I'll just shower later,' I'll be swiftly reminded of the word 'Malassezia.' Or else force myself to put a hairdryer on my hair before drifting off.
Consider me warned.
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