Is sleeping with wet hair bad for your health? What the experts say

Did you skip your late-night shower because you were too tired to blow-dry your hair, and then immediately hear your mother’s voice in your head telling you that you’ll catch a cold if you go to sleep with wet hair?

Your mom was wrong—at least about the cold. If you go to bed with wet hair, you might feel sick, but not in the way you think.

Here you'll find an explanation of what can happen if you go to bed with a wet head.

The Risks of Sleeping with Wet Hair

There's no need to worry just because someone told you that you'll get sick if you go to bed with wet hair.

The risks are fairly minimal, but there are a few you should be aware of.

Cold

There is no evidence that going to bed with wet hair can cause a cold. If someone catches a cold, it is because they have been infected by a virus.

You may be infected with one of more than 200 viruses that cause the common cold, usually a rhinovirus.

The virus enters the body through the nose, mouth, or eyes and spreads through airborne droplets when an infected person sneezes, coughs, or speaks. You can also catch it by touching a contaminated surface or through close contact with an infected person.

Colds are more likely to occur during the colder months, as the school year begins. People spend more time indoors, in close proximity to others.

Fungal Diseases

Even though sleeping with wet hair won't give you a cold, it does increase your risk of developing a fungal infection of the scalp.

Fungi, such as Malassezia, can lead to conditions like dandruff or dermatitis. That's why it's recommended to go to bed with dry hair.

In addition to the fungi that naturally occur on the scalp, pillows are also a breeding ground for fungi. They thrive in warm environments, and a damp pillowcase and a damp pillow provide an ideal breeding ground.

An earlier study found 4 to 16 types of mold on the bedding associated with the tested pillow. These were Aspergillus infections, a common type of fungus responsible for causing serious infections in people with weakened immune systems. They can also worsen asthma symptoms.

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Hair Breakage

Sleeping with wet hair also affects the hair itself. Not only will you wake up with a flat head, but you can also damage your hair.

Hair is at its weakest when it is wet. The main risk (other than cosmetic) is hair breakage caused by tossing and turning your head while you sleep.

This is especially a problem if your hair is braided or pulled back into a ponytail, which puts more tension on it. If you can't avoid going to sleep with wet hair, it's best to leave it down.

If You Have to Sleep with Wet Hair

If you don't dry your hair completely before going to bed, here are a few tips to make sleeping with wet hair as safe as possible:

Apply argan oil to your hair

There is evidence that argan oil protects wet hair from breakage.

The hair cuticle is made up of scales similar to shingles on a roof. When hair is wet, it absorbs water and swells, causing these scales to lift and making the hair more susceptible to damage.

The oil reduces the amount of water absorbed, making your hair less prone to damage. However, this is not recommended if you have seborrheic dermatitis, as argan oil could make the condition worse.

Complete Care for Damaged Hair

Simple steps you can take at home without having to overthink it. Two sets, four individual steps.

Use a conditioner with argan oil

This conditioner with argan oil helps seal the hair cuticle, reduces friction, and makes it easier to comb through your hair.

Regular styling will definitely benefit bleached or chemically treated hair.

Dry your hair and comb it out as much as possible

If you can blow-dry your hair quickly or take a shower a few minutes earlier so your hair can air-dry, do so.

The less water you have in your hair, the better you can minimize damage. Be sure to (gently) comb your hair before going to bed to avoid putting additional strain on it.

Use a silk pillowcase

There is some evidence that sleeping on a silk pillowcase is better for the skin because it causes less dryness and provides a friction-free surface.

Although there is no evidence of its benefits for hair, the smoother surface may also help reduce damage, whether you go to bed with wet or dry hair.

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