What Happens If You Leave Conditioner In Your Hair Overnight?

Deep conditioning overnight? Let’s figure out whether it is good or not!

What Happens If You Leave Conditioner In Your Hair Overnight

When we undergo various hair care procedures (no matter at home or in a salon), we hope that they will have a visible effect soon enough. Of course, all of us would like to see our hair glossy, healthy, and strong the next day after we apply that magical conditioner or any other product that promises us wonderful results! And this is why some girls decide that “the more the better” concept is exactly what can make it happen.

This is why there are so many questions about leaving a conditioner in hair overnight. Simply because most women believe it can help to get a desirable effect faster! But is it really so? And is it bad to leave conditioner in your hair like this? This is what we are going to figure out today.

What Happens If You Leave Deep Conditioner In Your Hair Overnight?

Simply speaking, sleeping with conditioner in hair is not recommended and even prohibited. Hair conditioners, and especially the deep conditioning products, come with the instructions for a reason.

It may seem that, if we leave hair conditioner in our strands during the night, the effect from this product will show up faster and will be more prominent. However, it is a huge mistake to think so! You would not take more than the prescribed dosage of medication just to make it work faster, right? Right, you would not because you know what the aftermath can be if you do so!

It is all the same with hair care products including conditioners. Practicing deep hair conditioning overnight can end up with quite an adverse effect on your tresses. See, deep hair conditioners are formulated to penetrate the hair shaft to be able to cure dry and brittle hair. According to the tests taken, you normally need to let the hair conditioner sit on your chevelure for fifteen to thirty minutes to allow the product to work as it should and moisturize your hair properly.

But if you leave in the conditioner overnight, this is what will happen to your hair. The moisture will be absorbed into the hair shaft making the inner hair structure – the cortex – swell. This will create tension on the hair shaft as it expands. And as your hair dries, it contracts back to normal.

However, since the product is there on your hair all night long, your tresses will undergo the constant expanding and further contracting. And this is definitely what they are not meant for! Such fluctuations will lead to what is called hair cuticle hygral fatigue. Simply speaking, too much moisture absorbed into the hair cuticle may force it to become way more fragile and lose its elasticity over time. That’s if you practice overnight deep conditioning regularly.

The repeating stress after the constant wetting and drying can even result in hair breakage!

What Happens If You Leave Deep Conditioner In Your Hair Overnight
Credits: pixelshot, via Canva.com

How to Use a Hair Conditioner Correctly?

But if sleeping with a deep conditioner in your hair is not recommended, how long to deep condition at all, you may be wondering? Well, this is not complicated at all! Of course, you can always find the instructions on the bottle of this hair product, but we think we could remind you of the basic sequence of actions so that you could always keep them in mind.

So to condition your strands properly, you will need to take the following steps:

  • After washing your hair, wring the excess water from your tresses
  • Take a dime sized amount of hair conditioner you usually use adjusting its quantity as per the hair length
  • Rub it between your palms and apply through the mid shafts to the hair tips
  • Leave your conditioner in your hair to work for at least five minutes, but don’t keep it on your hair for more than thirty minutes!
  • Rinse the product off with room temperature water

And to make sure that you will avoid making the most common mistakes that girls make when using hair conditioner, we suggest you look through these don’ts you should be aware of:

  1. Always apply hair conditioner to the wet hair
  2. Avoid roots and scalp when applying the product
  3. Rinse your hair thoroughly to avoid the product build up
  4. Use a deep conditioning hair mask at least once a week

Like this, you will be able to take care of your locks properly without damaging it.

How to Use a Hair Conditioner Correctly
Credits: pixelshot, via Canva.com

What Does Deep Conditioning Do to Your Hair?

Have you ever asked yourself this question? We are pretty sure you have! And if you haven’t found the answer yet, we are here to provide you with it. See, in general words, hair conditioners are made to make your hair feel softer, lustrous, and manageable.

These products contain cationic surfactants. These surfactants have positively charged hydrophilic heads that stick to the negatively charged hair strands and form a sort of protective coating that reduces static electricity and friction. In addition, hair conditioners improve the shine and color of our strands.

Can I Use A Rinse-Out Conditioner As A Leave-In?Can I Use A Rinse-Out Conditioner As A Leave-In?

What to Do If You Notice the Symptoms Of Hygral Fatigue On Your Hair?

As you already know, excessive hair conditioning may lead to hygral fatigue. But how do you know that your tresses are affected by it? Simply check your hair for one or several of these symptoms:

  • tangling
  • frizziness
  • dullness
  • brittleness
  • constant hair breakage
  • a gummy texture

If you notice that you have it, don’t panic. Hygral fatigue can be treated quite easily, and you can start with one of the suggested solutions.
First of all, try to change your hair product and washing routine. If the reason for your hygral fatigue is over moisturized hair, minimize the use of shampoo and conditioners, and also reduce the frequency of hair washes.

Also, if you reduce other sources of damage, it may help a lot. What do we mean? Don’t towel-dry your hair, stop chemical treatments, straighten your hair less, use blow dryer less frequently, and avoid dyeing your chevelure too often.

And follow a few simple rules to be able to avoid the development of hygral fatigue in future:

  • shampoo your hair gently
  • wear a swim cap when in a swimming pool
  • after washing, let your hair dry itself before you brush it
  • use shampoos with a low pH
  • apply coconut oil as a pre-wash

With that in mind, you will restore the health of your tresses and your hair will be thick, healthy, and strong again.

So, this is actually what we wanted to share with you on the subject of proper hair conditioning. Now you already know whether or not you should leave deep conditioning products in your hair during the night. Also, you learned what can be the effects of such hair “treatment”, and what it may lead to.

We also gave you a brief guide on how to condition your locks properly and what to do if you notice they develop the symptoms of hygral fatigue which is a frequent aftermath of improper hair conditioning.

With all that in mind, we hope you will take care of your mane delicately and with proper attention!

Frequently Asked Questions

⭐ Can you leave conditioner in your hair without rinsing?

No, hair conditioner must be washed off.

⭐ Can you leave a hair mask on overnight?

No, hair masks must be kept on your hair according to the instructions.

⭐ What can be the reasons for hygral fatigue?

It can be an excessive hair moisturizing, genetical causes, damaged hair, loss of protective oils, loss of pH balance, and more.

Written by
Kate worked in "The Fashion Magazine" for four years as a freelance writer and loved to consult and help people with their style. How to create your own style, how to look beautiful, and select trendy colors for your hair - these are just a few of many issues Kate will happily explain in Beezzly Beauty blogs!
Our editors independently research, test, and recommend the best products; you can learn more about our review process here.
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