Sleeping with wet hair might seem harmless, but the truth is a bit more unsettling than most people realize. When you lie down with damp strands, the moisture seeps into your pillow, creating the perfect warm, humid environment where fungi and bacteria thrive unseen. All night long, your scalp rests against a breeding ground you can’t see—but your skin and hair definitely feel it.
Wet hair is also at its weakest, and every twist, turn, and rub against the pillow can lead to breakage, frizz, and knots that seem to appear out of nowhere by morning. What starts as a simple habit can slowly turn into irritated scalps, unpredictable hair texture, and pillows that aren’t as clean as they look.
If you love your nighttime showers, at least give your hair time to dry—or risk waking up to more than just a bad hair day.