I have dandruff after a keratin treatment, What can I do?

girl looks at her hair in the mirror

  • You have dandruff after the keratin treatment because you probably used keratin with formaldehyde.
  • If you feel uncomfortable or itching after the keratin treatment, you can ask a dermatologist.
  • Alternatively, if it’s mild, I’ll tell you how to solve the dandruff problem that caused the bad keratin.
  • I’ll also show you how to identify if a keratin treatment has formaldehyde or not.


If you want to go straight to the solutions to eliminate dandruff caused by keratin, click here


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Have you had a keratin treatment and noticed that your head is full of dandruff?


I understand your disappointment.

However, having dandruff or white flakes after a keratin treatment  is quite common. 

It usually disappears over time. Do you want to know why your scalp has become full of dandruff?


How can such a hair-favoring treatment as keratin produce these flakes?

Moreover, do you want some tricks to get rid of that annoying dandruff you got after the keratin treatment?


Stay and read this article!


What type of keratin have you applied?

bottle of formaldehyde

Keratin treatment is the choice for women looking for straight and beautiful hair.

One of the advantages of keratin is that it can be professionally applied in a salon, or  you can apply it yourself in the comfort of your own home.


Also, there are so many hair keratin options out there that it may be confusing to know which one to get.

Having said that, would you believe me if I told you that the type of keratin you’ve used could be  the cause of those annoying flakes or dandruff? 


Yes, that’s right.

Let me tell you a little more.


2 types of keratin

  • Formaldehyde-free: If your keratin is formaldehyde-free, your hair will look great.
  • With formaldehyde: Some keratins may contain formaldehyde, even in very low quantities.


But believe me,  just a little bit of this ingredient will be enough to irritate your scalp  and cause flakes or dandruff.

You may be wondering, what is formaldehyde?

Why is keratin with formaldehyde bad?


Formaldehyde is an ingredient banned in many countries. Unfortunately, it’s still used anyway.

So, if you had a keratin treatment at your salon and then “magically” dandruff appeared in your head,   your scalp may have reacted to some substance from the treatment (yes, formaldehyde). 

Here are some tips to help you check if your keratin treatment contained formaldehyde.

How do I know if the keratin treatment contains formaldehyde?

young woman with straight hair doubts

You must be very careful when selecting the products for your hair. Your scalp is skin, so it’ll absorb everything you apply to it.

If you have dandruff and the keratin treatment was applied at the salon,  talk to your hairdresser about your situation. 

They should tell you honestly the keratin type applied to your hair. Don’t you trust your hairdresser or simply don’t dare to ask him?


Don’t worry.

There are certain symptoms that allow you to detect if the keratin contained formaldehyde.  Take note:

  • Your eyes burned slightly when the product in your hair was applied, dried, or ironed.
  • You had a slightly scratchy throat.
  • Your eyes watered.
  • Your nose itched or the smell was very strong.

If you had one or more of these symptoms during keratin application, the product probably contained formaldehyde.

Then,  what caused your dandruff was the formaldehyde. 

What if I applied keratin at home?

girl pointing her head


Keratin is trendy now and we’re all crazy about keratin. However, you may get dandruff after applying it at home.

If you have the packaging of the product you used,  check the components on the label. 

Also, if it’s a product approved by the authorities in your country, it probably includes a customer service phone number.


You can call and clear all your doubts.

Box keratins that comply with the regulations and health tests are unlikely to contain  substances that are irritating to the health of the scalp. 

On the other hand, if your treatment arrived in an unlabeled container from an unknown origin, it probably does contain formaldehyde. Be careful.


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Solutions to eliminate dandruff caused by a keratin treatment

back girl in the shower with soap on her head

As the saying goes, “what’s done is done,” but you can remedy it. If you’re overly concerned about dandruff or have  itchy, reddened,  and uncomfortable skin, make an appointment with a dermatologist.


2 types of dandruff

Dry dandruff

 Dry dandruff usually flakes off on its own  with the movement of your hair.

You may even be able to see small flakes that tend to fall on your shoulders, especially if you wear dark clothing.



  • If you have dry dandruff, you should stop washing your hair with your usual shampoo and turn to a dermatological option.
  • Use dry dandruff shampoo that regulates scalp flaking.
  • You can also use oatmeal shampoo. It’s ideal for  soothing and moisturizing your scalp. 
  • Be careful with homemade solutions like vinegar.

Vinegar is known to get rid of dandruff on your head, but it could also complicate the situation by causing itching and further irritation to your scalp.

Oily dandruff

In contrast,  oily dandruff tends to stick to the hair  and is more difficult to remove. The hair usually has a shinier appearance.



Conclusion: Choose your keratin treatment well before applying it

In this article, we learned that the reason for your dandruff after applying a keratin treatment is that  the product you applied probably included formaldehyde. 


To solve your dandruff problem, you should use a specific shampoo (for dry or oily dandruff). Alternatively, make an appointment with your dermatologist if you feel very itchy or burning. 

I hope you find my advice helpful. Fear not, soon dandruff will be history and you’ll have amazing hair with keratin.

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