Why Is Your Hair Still Frizzy After a Keratin Treatment?

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  • Many reasons can cause your hair to have frizz after a keratin treatment.
  • You may not have applied the treatment correctly. Alternatively, your hair was too damaged before applying the keratin, or maybe it wasn’t suitable for your hair type.
  • You may be able to reapply the keratin now according to the product you used and your hair health. Otherwise, you may have to wait at least 30 days to reapply it.


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Is your hair still frizzy after a keratin treatment?

Don’t worry. There’s a solution.

I’ll show you the possible causes of your hair being still frizzy after a keratin treatment and what you can do about it.


Frizz is one of the dilemmas most women have to solve.

Companies specializing in hair cosmetics invest a lot of money in research. What for?


To formulate treatments that work and eliminate frizz.

However, it doesn’t work in some cases.  There’s nothing more frustrating than buying a keratin treatment and not getting the expected result.  I’m sure you really wanted to get rid of that frizz once and for all.


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The million-dollar question is, why does your hair still have frizz after a keratin treatment?

According to my experience, there’re four possible reasons:

  • You didn’t follow the instructions
  • Your hair was too damaged before the keratin application
  • The keratin treatment was out of date
  • The product was not the correct one for your hair type


Let’s delve into each of these four possible reasons. In just a few minutes, you’ll have more information on what may have gone wrong with your keratin and what’s causing the frizz.

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Did you apply the keratin treatment correctly? Did you wash your hair before applying the keratin? Did you leave the product in the hair for the correct time?

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There are many keratin treatments, and each has its own procedure.

The steps to apply keratin are many, and any error will generate unexpected results.


This is the first step for any treatment.  Before a keratin treatment, we should wash the hair with a ph-balanced or clarifying shampoo

The aim is to remove any product residue or any build-up from styling creams or whatever you may have used.


If you skipped this step or didn’t use the correct shampoo, your keratin may not have penetrated your hair fiber properly.

As you didn’t remove the residual products from your hair, they prevented the hair from absorbing the keratin.


  • You should also apply the keratin evenly throughout the hair. Then, leave it in during the indicated time.

If the keratin had to be in for 20 minutes, and you only left it on for 10 minutes,  it won’t do its job, and the result will possibly be frizzy hair. 


  • The last step in any keratin treatment is to flat iron the hair to seal and fix the keratin in it.

It requires a lot of care and patience because each strand has to be ironed.

What happens if you forget to iron a strand of hair? The treatment won’t work there.


Manufacturers of at-home keratin treatments want us to believe that they’re easy to apply.

However, to get good results, you need to follow the manufacturer’s instructions carefully.


Any variation or alteration in these steps will affect the results.

And one of the most visible signs of failure is the appearance of frizz either on the day of application or after.


Was your hair too damaged before applying keratin?

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When hair is too damaged or too frizzy, the problem is the hair, not the keratin.

If the keratin had formaldehyde, it may have further damaged the hair. That’s why the frizz couldn’t be eliminated.


Alternatively, your hair could be too porous due to the damage. In that case, the keratin couldn’t penetrate the hair core.


Was the keratin you applied to your hair in good condition?

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Let me ask you this question. Did you get the keratin treatment at a professional salon, or did you do it yourself?

Why do I ask you this?


Professional salons work with good quality products and well-known brands.

Also, products don’t expire because they’re usually used every day.


On the other hand, if you bought a keratin a few years ago, used some, and saved the rest, did you check the expiration date of the product before using it?

 All hair products have an expiration date, even keratin treatments. 


Alternatively, the product may not be expired but improperly preserved. Then, it could’ve lost its properties.

So, are you sure that the keratin you used was not expired?


Did you use the right keratin for your hair type?

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As a professional stylist, I want to tell you that one product can work in different ways. It has to do with the type of hair on which it is applied.


The same goes for keratin. One product will work on fine hair differently than on thick hair.

Thicker hair may require several applications to achieve the desired result because it usually takes longer to iron.

 Is your hair too thick? You probably need to repeat the keratin application or switch to a more intense one. 


We analyzed the possible causes of having hair with frizz after keratin application.

Let’s talk about what you can do. Should you reapply keratin?

That’s what we’ll talk about next.


What can you do if your hair is frizzy after keratin?

If you are 100% sure that you have followed all the keratin steps and you still have frizz:

  • Either your hair is too damaged
  • Alternatively, your hair may be too thick


If you have damaged hair, do this…

If your hair is damaged, before thinking about any type of keratin you must recover it. Only then can you start thinking about one of these treatments.

Start by applying argan or coconut oil every day. Use nourishing or moisturizing shampoo and conditioner to maintain the health of your hair.

Visit your stylist, get a haircut, and try to maintain a balanced diet. Your hair reflects what you eat.


 Once you are sure your hair is in good condition, you can repeat the keratin treatment. 

Try a formaldehyde-free keratin first. It may take a little longer to get the expected result, but you won’t expose your hair to damage.


If you have thick hair, do this…

If your hair is too thick, formaldehyde-free keratins will take a little longer to work.

It doesn’t mean you have to leave it on longer. It just means that all the washing, applying, and ironing steps will have to be done more thoroughly to get rid of the frizz in your hair.


 If your hair is thick and healthy, you can repeat the formaldehyde-free keratin. 

Remember that thick hair needs several keratin treatments to work and eliminate frizz.


If you used keratin with formaldehyde and you didn’t achieve the results you expected, you should wait at least 30 days to repeat it, as long as your hair is healthy.

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