Home Fashion What Actually Happens When You Walk Outside With Wet Hair

What Actually Happens When You Walk Outside With Wet Hair


How many times did your parents warn against walking outside with wet hair? If you’ve always wondered whether this leads to a winter cold or not, the short answer is: kind of. 

MORE: How to Take Care of Textured Hair While Working Out

We talked to four experts for the undisputed facts: Holly Mills, Hair Stylist for Streeters, Melissa Peverini, Marula Pure Beauty Oil Brand AmbassadorMicky Kibbe, owner of Swoon, and Becky Marinich, National Educator for Aquage Haircare

Mills and Kibbe filled us in right away by explaining that wet hair can’t directly cause a virus or cold, but it does affect your body temperature, which can eventually lead to sickness if you don’t catch it early. That’s because whenever you step outside with wet strands, your body struggles to stay warm because you’re losing heat through your head at an exponential rate.

This in turn, keeps your immune system from working to its best ability, and leaves ample room for germs to sneak in, just like Mom said they would. 

Sniffles aside, subzero temps are also breeding ground for breakage. This goes for any hair type– silky, textured, straight, curly, kinky and coily, but Kibbe said it occurs more quickly for curly hair.

MORE: 50 Seriously Stunning Winter Hairstyles to Try

Marinich also broke down the science of breakage, so you can better understand how your strands are affected from the inside out: 

“Basic chemistry teaches us that when water reaches a freezing point, it solidifies and expands by almost 10%! So, when the temperature drops, and you walk outside with wet hair, those water molecules that have adhered to the hair’s outer cuticle layer solidify and expand. When they expand, it can cause the hair shaft to swell, and encourage the hair’s cuticle layer to lift, leaving the hair vulnerable and exposed to environmental and thermal damage. When hair freezes, it naturally becomes less pliable. Just like an icicle, our frozen locks can easily snap and break off completely!”

The rate at how quickly your hair can break depends on the strength of your hair cuticles, which Mills says is different for every hair type. Cold, dry air can also lead to dandruff.

“It [cold weather] can definitely dry it [scalp] out, just as it would your hair. We also tend to take very hot showers during winter months, which can really dry our skin and scalp out. If your skin is dry, it is likely that your scalp is also dry.” To prevent flaking, she recommends detangling with a boar bristle brush before you shampoo to loosen up dry skin on the scalp and stimulate blood circulation.

MORE: 5 Things to Do Before a Dramatic Hair Transformation

To avoid wet hair struggles altogether, Mills and Kibbe advise showering at night, but caution against sleeping on wet hair because patches of skin will stay moist longer than they need to. Instead, gently use a microfiber towel to absorb excess water or shake and squeeze your strands multiple times.

Even with all of these prevention techniques, you’re still bound to run out the door with wet hair at least once. In that case, Peverini and Marinich shared two of their favorite treatments for keeping hair hydrated and protected in the winter elements: 

  1. The Aqauge SeaExtend Silkening Oil Treatment, a weightless Argan oil which “seals the cuticle, locks in moisture, and speeds up blow-styling time by 40%”
  2. The Marula Pure Beauty Deep Conditioner that combats “dehydrated hair from [going from] dry-heat inside to cold winter air outside. Apply the conditioner to damp hair, put on a shower cap for 10 min, then rinse.” 

MORE: The Best Essential Oils for Common Winter Ailments

The winter can be a tough time all around– running from place to place bundled up, darkness rolling in early, and So. Many. Holiday. Parties. But don’t let your hair be one of the reasons why you have to slow down. It can be easy to run out the door after a shower, but drying your hair beforehand could save you plenty of sick days in the future. 

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