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Why Is Hair Drying Damaging To Hair?

Question

Dear Karen,

Why Is Hair Drying Damaging To Hair? Image Courtesy Of Tom Carson Photography - Total Image Magazine - All Rights Reserved Why Is Hair Drying Damaging To Hair? Image Courtesy Of Tom Carson Photography - Total Image Magazine - Hair By Kenneth's Hair With Style - Metairie, Louisiana - All Rights Reserved

I wet wash and blow dry my naturally wavy hair 4-5 times per week.  Then I use a paddle brush to blow dry my hair straight.

Sometimes I use a hot iron to quickly touch up any hair sections which might still have any waves.

Recently I've noticed a lot of hair breakage around my hairline and along the top of my head.

When I asked my hairdresser if she could help me figure out what was causing the breakage, she told me it was from using a hot blow dryer on my hair several times a week.

She also said the hot iron may be causing damage, but it was most likely from the frequent blow drying.

My hair is highlighted and lowlighted.

I thought maybe the highlighting might be causing the breakage, but my hairdresser said it is from the frequent blow drying.

I'm confused.  Why is hair drying damaging to hair?  What can I do to stop the breakage without giving my hair dryer.

Suze

Answer

Dear Suze,

Why Is Hair Drying Damaging To Hair? Image Courtesy Of Tom Carson Photography - Total Image Magazine - All Rights Reserved Why Is Hair Drying Damaging To Hair? Image Courtesy Of Tom Carson Photography - Total Image Magazine - Hair by Jennifer & Co. - Mentor, Ohio - All Rights Reserved

There might be several things contributing to your current hair breakage which may or may not include the following issues:

1. Cuticle Layer Swelling Occurs During Any Exposure To Water

Whenever you get your hair wet during a cleansing session, the outside cuticle layers of your hair follicles, which are designed to protect your hair from damage, open and swell.

Hair cuticles layers will swell when drenched with water.  They may open even further when using hot water.

It's important to avoid wet washing your hair more frequently than necessary because the opening and closing of the cuticle will always occur triggering more damage.

To minimize the damage from the water causing the cuticle to swell, avoid hot water.  Finish any wet washing sessions with cool/cold water to close the cuticle layer and prevent air moisture from entering the hair after it is dry.

2.  Cuticle Shape May Be More Open Allowing More Water To Enter

Your natural cuticle shape is wavy/  This makes it more at risk for allowing moisture in the hair.  This moisture originates from natural humidity.

If it's absorbed into your cuticle layers after your hair is dried, it will cause your cuticle layers to swell which results in damage and frizz.

Any cuticle layer swelling experiences will damage the hair.  Ironically, hair may feel rough, frizzy, dry and damaged because the cuticle layers have holes and breaks which allows water from the air to saturate strands.

When hair gets wet it swells.  When it dries it unswells.  At that point depending upon the humidity in the air, your hair will attempt to re-balance and will attract water into the hair shaft.  Any type of cuticle opening or swelling may damage hair.

2.  Chemical highlighting and low lighting also opens the cuticles and causes them to swell, which has damaged the cuticle.

3.  Heat damage from hot water, blow dryer heat and hot styling tools (hot irons, rollers or similar).

Heat is damaging to the hair by causing dehydration.  It triggers the loss of moisture.  It also creates a disruption to the hair natural lipid layers.  How? By degrading it's protein structure.

What Should You Do?

1.  Only wet wash hair in lukewarm water as often as necessary to minimize cuticle disruption.

2.  Use a rinse out conditioner to help block humidity from entering the hair cuticle layer.

3.  Finish with a cool/cold final rinse to help close the cuticle layer even further.

4. Use a microfiber towel or 100% cotton t-shirt to blot hair.  Rubbing or ruffling wet hair with rough towels are damaging since hair is more fragile when wet and cuticle layers can be rubbed off.

5.  Protect your hair with a good leave-in conditioner or similar styling product before drying or styling to minimize additional cuticle layer disruption and ultimate moisture absorption.

6.  In between wet washing sessions use a tiny bit of coconut oil or a similar formula. Lightly apply to the outside layer of hair to block absorption of water from the environment which may cause the cuticle layers to swell, frizz and be more prone to damage.

Managing cuticle layer disruptions appropriately, applying the appropriate humidity blocking products and utilizing the appropriate conditioning products will make all the difference for long term hair recovery.

Best wishes to all.

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To AskKaren a question, send an e-mail to: askkaren@hairboutique.com

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