Which lasts longer, Brazilian blowout or keratin treatment?

keratin in dyed blonde hair

  • The keratin treatment lasts longer than Brazilian Blowout because it’s more intense.
  • Keratin lasts three to five months, and Brazilian Blowout lasts three to four months.
  • But beyond the duration, there are other factors that you should consider choosing the most appropriate treatment for you. I’ll tell you what they are and how to extend the duration of the two treatments.


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Whenever one of my clients asks me these questions, I know the conversation will go on longer than both she and I would like.


Because it’s not a black and white question.


Do you know why?

 Because the duration of treatments is something to consider. However, it’s more important to know which one is best for your hair. 


When we invest money in treatments, we all want them to last as long as possible.

Why would you use the keratin treatment, even if it lasts longer than the Brazilian Blowout if your hair needs another type of repair?


Now that you know which of the two treatments lasts longer, you should analyze your hair needs.

I won’t leave you alone.

We’ll start by looking at the differences between how long the two treatments last.


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The keratin treatment lasts longer than Brazilian Blowout because it contains a higher concentration of chemicals

keratin treatment on colored hair

It means that keratin is stronger than Brazilian Blowout, although both treatments contain a certain amount of formaldehyde.


What is formaldehyde?

It’s chemical ingredients that eliminate frizz and straighten the hair by altering its internal structure.


Now, the concentration of these chemicals in the keratin treatment is much higher than in the Brazilian Blowout formula.

Therefore,  the effects of the keratin will be much longer lasting than Brazilian blowout. 


As Brazilian Blowout contains less formaldehyde, it’s less damaging.


So, we can say that:

  • Keratin treatment lasts a maximum of five months.
  • Brazilian Blowout lasts for a maximum of four months.


Still, don’t choose a treatment only looking at its duration. You need to consider what your hair needs.

And that’s what I’ll talk about next.


If your hair is severely damaged, a keratin treatment is best

I can almost guess what you’re thinking right now.

How can you tell if your hair is severely damaged?

By paying attention to it. Take five minutes and look at your hair.

  • Do you have dull hair?
  • Do you clearly notice frizz?
  • Are your ends dry and brittle?
  • Is your hair frizzy?
  • Do you have difficulty detangling your wet hair?
  • Have you applied excessive bleaching or permanent hair coloring?


In that case, your hair is seriously damaged and you should apply keratin treatment to repair it completely.


If your hair has slight damage, it’s best to opt for Brazilian Blowout

How do you identify mild damage?

  • Does your hair have frizz in some areas?
  • Does it frizz naturally?
  • When you comb your hair, does it fall out?


If you answered yes to any of these questions, start smiling.

In that case, your hair is slightly damaged.

Then,  Brazilian Blowout is ideal for you, even if it lasts less than the keratin treatment. 


Anyway, I’ll tell you how to extend the effects, so keep smiling!


Actually, no stylist would recommend the keratin treatment on slightly damaged hair because it could damage it even more.

Do you know why?


Because the keratin treatment is applied with a lot of heat. And high temperatures could weaken your hair.


How to extend the duration of the effects of a keratin treatment?

shampoo wears out hair color

You already know that the keratin treatment lasts approximately three to five months according to your beauty routine.

 To extend the duration up to eight months , you should consider a few situations.
  • Don’t wash your hair every day. If possible, try to wash it every 48 to 72 hours to prevent the keratin from fading.
  • Blow-dry your hair on high heat because keratin is activated by heat.
  • Don’t apply permanent hair dyes or bleach because the chemicals eliminate the effect of keratin.
  • Use shampoo and conditioners that contain keratin.
  • Flat-iron your hair twice a week at most so as not to cause dehydration.


How to make the effects of Brazilian Blowout last longer?

anti frizz

To  extend the duration of the Brazilian Blowout from three to seven months , you must use the brand’s treatment maintenance products.

Which products do I mean?

  • Brazilian Blowout Anti-Frizz Shampoo.
  • Brazilian Blowout Anti-Frizz Conditioner.
  • Ionic Bonding Spray Brazilian Blowout.


Of course, these products can get a little pricey.

So, what can you do if you can’t afford them?


The least you’ll have to do is use sulfate-free products. Remember that sulfates are detergents that remove keratin with each wash.


Also,   don’t use the flat-iron for fifteen days after applying the treatment.   In turn, you can dry your hair with a blow-dryer at medium temperature and fifteen centimeters away from your hair.



The keratin treatment lasts longer than Brazilian Blowout. But this shouldn’t be the reason to choose one of the two treatments.

What you should consider is what your hair needs. So, if your hair is very damaged or damaged, use the keratin treatment.

Alternatively, if your hair is frizzy or slightly damaged, opt for Brazilian Blowout.

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