Is it bad to sleep with wet hair? 5 Shocking Truths

Is it bad to sleep with wet hair? This common question pops up all the time, especially for those who prefer nighttime showers. To get straight to the point: yes, it is generally bad to sleep with wet hair. Here’s why:

• Hair Breakage: Wet hair is more fragile, leading to increased breakage and split ends.
• Scalp Acne: Sleeping with wet hair can lock in moisture, promoting bacterial growth and potential scalp acne.
• Fungal Infections: A damp environment can foster fungi and bacteria, increasing the risk of infections like folliculitis and seborrheic dermatitis.
• Neck Pain: Uneven pillow support from wet hair can result in neck and back pain.
• Moldy Mattress: Wet hair can lead to a damp bedding environment, which can harbor mold and cause odors.

Understanding why these problems happen and how to prevent them is crucial for maintaining your hair and scalp health.

My name is Ben Trapskin, creator of Yawnder. With years of experience in sleep health, I learned the impact sleep quality—and even small habits like going to bed with wet hair—can have on overall well-being.

Now, let’s explore the deeper reasons why sleeping with wet hair can be problematic and what you can do to mitigate these risks.

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Is it Bad to Sleep with Wet Hair?

Risks of Sleeping with Wet Hair

Hair Fragility and Breakage

Wet hair is more fragile than dry hair. According to certified trichologist Bridgette Hill, “Wet hair fibers are more fragile and can only sustain so much manipulation.” The friction between wet hair and your pillow can cause fissures and tears on the hair shaft, leading to breakage. Dr. Hadley King, a board-certified dermatologist, adds that water temporarily breaks hydrogen bonds in hair strands, increasing their elasticity and making them more prone to breakage, especially for straight or wavy hair.

Scalp Issues

Sleeping with wet hair can disrupt your scalp’s microbiome. Bridgette Hill explains that increased moisture from wet hair can mix with sweat, sebum, and product buildup, leading to an unhealthy scalp environment. This can hinder hair follicle health and function.

Fungal Infections

A damp pillow can become a breeding ground for bacteria and fungi. Marty Harper, a celebrity hairstylist, warns that this can lead to scalp acne and more severe infections like folliculitis and seborrheic dermatitis. Dr. King also notes that damp bedding can harbor mold, which can exacerbate scalp conditions like dandruff, psoriasis, and eczema.

Hygral Fatigue

Hygral fatigue refers to the repeated swelling and contracting of hair cuticles due to moisture absorption and loss. This weakens hair over time, making it more susceptible to breakage. Dr. Alexis Stephens points out that this is particularly problematic for those who condition their hair excessively or leave it wet overnight frequently.

Potential Benefits of Sleeping with Wet Hair

While the risks are significant, there are some potential benefits to consider:

Moisture Retention

Sleeping with damp hair can help retain moisture, which is beneficial for dry or curly hair types that need extra hydration. Using leave-in conditioners or oils like coconut or argan oil can help keep hair moisturized.

Reduced Frizz

For those with curly or coily hair, sleeping with damp hair can reduce frizz. The increased elasticity in wet hair can help curls maintain their shape better overnight, reducing the need for heat styling in the morning.

Heat-Free Styling

Sleeping with wet hair can offer a natural, heat-free way to style your hair. Loose braids or plaits can create waves, and twisting or pin-curling can help define curls without the need for damaging heat tools.

While there are some benefits, the overall consensus from experts like Dr. Stephens and Bridgette Hill is that the risks generally outweigh these advantages. If you must sleep with wet hair, taking precautions like using a silk pillowcase or protective hairstyles can help mitigate some of the damage.

Next, let’s debunk some common myths and misconceptions about sleeping with wet hair.

Common Myths and Misconceptions

Myth: Sleeping with Wet Hair Causes Colds

One of the most common myths is that sleeping with wet hair can cause colds. This belief has been around for generations, but let’s set the record straight.

Cold Viruses and Immune Response

The truth is, colds are caused by viruses, not by being cold or having wet hair. According to the Centers for Disease Control and Prevention (CDC), the most common cold-causing virus is the rhinovirus. It spreads through airborne droplets when someone coughs or sneezes, or by touching contaminated surfaces.

Your immune system fights off these viruses. While a weakened immune system can make you more susceptible to catching a cold, simply having wet hair doesn’t weaken your immunity.

Environmental Factors

Sleeping with wet hair might make you feel chilly, especially in a cold room or during winter. However, feeling cold doesn’t directly cause a viral infection. It might make you uncomfortable, but it won’t give you a cold.

Myth: Sleeping with Wet Hair Causes Blindness

Another bizarre myth is that sleeping with wet hair can cause blindness. This is completely unfounded and has no scientific basis.

Medical Opinions

Medical experts unanimously agree that there is no connection between wet hair and blindness. Dr. Lauren Penzi, a dermatologist at MDCS Dermatology, states, “There is no physiological mechanism by which wet hair could affect your eyesight.”

So, rest easy knowing that your vision is safe, even if you occasionally hit the pillow with damp hair.

Myth: Sleeping with Wet Hair Causes Scalp Infections

While colds and blindness are myths, there is some truth to the idea that sleeping with wet hair can cause scalp issues. Let’s break it down.

Fungal Infections

A damp pillow can become a breeding ground for bacteria and fungi. According to Dr. Hadley King, a board-certified dermatologist, “Sleeping with wet hair creates a damp environment for the pillow and the scalp that can contribute to the potential overgrowth of fungus or bacteria.” This can lead to conditions like folliculitis and seborrheic dermatitis, which can cause itching, redness, and dandruff.

Mold Growth

Rex Isap, CEO of Happy Beds, warns that water from your hair can seep into your pillow and mattress, creating the perfect conditions for mold growth. Mold can exacerbate respiratory issues and cause allergic reactions like sneezing and red eyes.

While these scalp issues are concerning, they are preventable. Using a silk pillowcase, keeping your hair slightly damp rather than soaking wet, and maintaining good hygiene can help mitigate these risks.

Next, let’s discuss how to minimize damage if you do sleep with wet hair.

How to Minimize Damage if You Sleep with Wet Hair

If you occasionally find yourself going to bed with wet hair, don’t fret. There are steps you can take to minimize potential damage. Here are some expert tips:

Use a Microfiber Towel

One of the best ways to protect your hair is by using a microfiber towel. These towels are designed to absorb moisture more effectively than regular cotton towels.

Why Microfiber?

Microfiber towels are gentler on your hair and reduce friction, which helps prevent breakage. Dr. Stephens, a dermatologist, advises, “Towel dry your hair as much as you can with a microfiber towel to remove excess moisture.”

Using a microfiber towel can help you achieve that crucial 75% dryness before bed, reducing the risk of fungal infections and other scalp issues.

Opt for Loose Hairstyles

Tying your hair up loosely can prevent a lot of damage while you sleep. Tight hairstyles can cause tension and breakage, so opt for something more relaxed.

Loose Braids or Buns

Dr. Penzi suggests, “A loose braid or bun will help reduce tension and friction as you sleep.” This keeps your hair secure without pulling on the roots, which can lead to hair loss and damage over time.

Avoid ponytails, especially tight ones, as they can cause even more strain on your hair.

Sleep on a Silk or Satin Pillowcase

Switching to a silk or satin pillowcase can make a significant difference in the health of your hair.

Less Friction, Gentler on Hair

Silk and satin pillowcases cause less friction compared to cotton ones. Dr. Stephens notes, “These materials are gentler on the hair, reducing breakage and frizz.” They also help maintain your hair’s natural oils, keeping it moisturized.

Extra Benefits

In addition to being good for your hair, silk and satin pillowcases are also beneficial for your skin. They can help reduce the appearance of wrinkles and keep your skin hydrated.

By incorporating these simple practices into your bedtime routine, you can significantly minimize the damage caused by sleeping with wet hair. Next, let’s explore some expert tips for making the most of your nighttime hair care routine.

Expert Tips for Sleeping with Wet Hair

Quick Blow-Dry Techniques

Even if you’re exhausted, taking a few minutes to partially dry your hair can make a big difference. A quick blow-dry can remove some moisture, reducing the risk of damage.

Partial Drying

Dr. Stephens suggests, “Drying your hair to at least 75 percent before bed can safeguard your hair and scalp health.” Use a hairdryer on a low-heat setting to avoid excessive heat damage.

Heat Protectants

Always apply a heat protectant before blow-drying. This adds a barrier between your hair and the heat, minimizing potential damage. Look for products specifically designed for your hair type.

Air-Drying Techniques

If you prefer to skip the blow-dryer, air-drying can be a good alternative. Just make sure to give your hair enough time to dry before hitting the pillow.

Bedtime Routine

Dr. Gohara advises, “Wash your hair first, then attend to the rest of your bedtime routine.” Use this time to clean up the kitchen, do your nightly skincare regimen, or read a chapter in your book. This allows your hair to air dry as much as possible.

Damp vs. Soaked

“Damp is better than soaked,” Dr. Gohara says. Try to get your hair to a damp state rather than leaving it completely wet. The less water in your hair, the less risk of breakage and scalp issues.

Protective Hairstyles

Choosing the right hairstyle can also help protect your hair while you sleep. Opt for styles that reduce tension and friction.

Loose Braids or Buns

Dr. Penzi recommends, “A loose braid or bun will help reduce tension and friction as you sleep.” These styles keep your hair secure without pulling on the roots, which can lead to damage.

Caps and Bonnets

Consider wearing a cap or bonnet to keep your hair protected. Dr. Gohara advises, “Avoid twisting the hair into a tight bun first—just let it be free in the cap to avoid any unnecessary tension on your strands.” This prevents your wet hair from coming in contact with your pillow and skin.

By incorporating these expert tips, you can minimize the risks associated with sleeping with wet hair. Next, we’ll dive into some frequently asked questions to address common concerns and misconceptions.

Frequently Asked Questions about Sleeping with Wet Hair

Is it OK to leave hair wet overnight?

Leaving hair wet overnight is generally not recommended. According to Dr. Lauren Penzi, sleeping with wet hair can create a damp environment on your pillow and scalp, leading to potential overgrowth of fungus and bacteria. This can cause scalp issues like fungal infections and even affect your skin, leading to conditions like fungal acne.

Moreover, wet hair is more fragile and prone to breakage. Dr. Penzi notes that “wet hair is in its weakest state,” making it easier to damage. If you must sleep with wet hair, try to minimize the frequency and follow protective measures.

What happens if you accidentally sleep with wet hair?

If you accidentally sleep with wet hair, you might wake up to some unpleasant surprises. Here are a few things that can happen:

• Frizz and Tangles: Wet hair can dry unevenly, leading to frizz and tangles. This makes it harder to manage in the morning.
• Breakage: The friction between your wet hair and the pillow can cause hair breakage. Using a silk or satin pillowcase can help reduce this risk.
• Scalp Issues: The damp environment can lead to fungal and bacterial growth, potentially causing itchiness and infections on your scalp and skin.

If you find yourself in this situation often, consider adjusting your bedtime routine to allow more time for your hair to dry.

Is there any benefit to sleeping with wet hair?

While sleeping with wet hair is generally not advisable, there are a few potential benefits, particularly for certain hair types.

• Moisture Retention: For those with dry or curly hair, sleeping with damp hair can help retain moisture. This can reduce frizz and make the hair more manageable.
• Heat-Free Styling: Allowing your hair to air-dry overnight can be a gentler alternative to heat styling. Dr. Penzi mentions that “individuals with straight, thicker hair may experience less frizz compared to those with curly hair” when air-drying.

However, these benefits are usually outweighed by the potential risks. If you do choose to sleep with wet hair, take precautions like using a microfiber towel, opting for loose hairstyles, and sleeping on a silk pillowcase to minimize damage.

In the next section, we’ll address some common myths and misconceptions about sleeping with wet hair.

Conclusion

Sleeping with wet hair is generally not recommended due to the potential risks to both your hair and scalp. Hair breakage, scalp infections, and frizz are just a few of the problems you might face. However, life happens, and sometimes you might find yourself hitting the sack with damp locks.

Personalized Advice:

• Dry your hair as much as possible before bed. Use a microfiber towel to absorb excess moisture.
• Opt for loose hairstyles like braids or buns to minimize tension and friction.
• Invest in a silk or satin pillowcase to reduce friction and be gentler on your hair.

If you must sleep with wet hair, these tips can help mitigate some of the damage.

It’s all about balance. Occasional lapses won’t ruin your hair, but making a habit of sleeping with wet hair can lead to long-term issues.

At Yawnder, we care about your overall well-being, including the quality of your sleep and hair health. Our expertise in sleep products can help you create a bedtime routine that supports both. For more insights and personalized advice, check out our Sleep Study page.

Prioritize your health and sleep well!