KERAZUL Keratin Treatment in a 3-Month Test: My Experiences (before / after)

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September 16, 2025
September 16, 2025

In certain forums and on social media, you’ve recently been hearing more and more about a supposedly revolutionary product that’s supposed to keep unruly, frizzy hair smooth and shiny for months – all without a visit to the hairdresser: The KERAZUL Keratin Treatment.

It seems to be something of an insider tip among women who are simply tired of spending hours blow-drying, straightening, and styling – only to have their hair stick out in all directions again at the slightest drizzle or on a humid day.

I honestly thought at first: “That sounds too good to be true.”

Because I know exactly how it feels to stand in front of the mirror for hours in the morning, straightening, blow-drying, layering products in your hair – only to have the result destroyed by the slightest hint of moisture.

Instead of shiny and smooth, the hair suddenly looks puffy, frizzy, and somehow unkempt. And every time you think to yourself: What was all that effort for?

At the same time, you know that constant straightening and all the products only damage the hair even more. It becomes more brittle, drier, loses its shine.

And the worst thing is: It’s not just about hair. It’s about the feeling of not being pretty enough. About constantly worrying about how you look. About hiding – or canceling dates because it’s raining.

I’ve so often wished I could just wake up, comb my hair – and it would be straight, healthy, and beautiful. Without hours of styling. Without fear of the weather.

“Maybe KERAZUL is Really Different…”

I was skeptical. I had already tried so many things:

  • Countless drugstore products that lasted a few hours at most.
  • Straighteners that made my hair brittle in the long run.
  • And much more…

But nothing has ever permanently changed my hair.

Nevertheless, KERAZUL wouldn’t let me go. Perhaps because I kept finding testimonials in forums and on social media that sounded extremely convincing. Many women described how their hair suddenly remained straight for weeks or even months – even in rain or high humidity.

That made me extremely curious. I wanted to find out if it was really something different than all the products I had already tried.

So I started researching.

KERAZUL is supposedly based on a special technology: KeraSmooth³ Technology. It is supposed to achieve three things at the same time:

  • To replenish the hair structure from the inside so that the hair no longer absorbs moisture.
  • To form an invisible protective layer that keeps out rain and humid air.
  • Nourishing oils add shine, smoothness, and a healthy appearance—without making hair greasy or heavy.

That was always the problem with other products. They never combined all three points.

I hesitated for a long time. On the one hand, I didn’t want to be disappointed again. On the other hand, I thought: What if it really works this time?

So I ordered it – to find out if it can really change my hair life.

How Does the Application Work?

If you’re thinking about trying it yourself: Here’s my complete review.

The application was actually a bit more complex than with normal hair products – but absolutely feasible for me.

  • Step 1: First, I had to wash my hair two to three times with the KERAZUL Clarifying Shampoo included in the set to remove all residue.
  • Step 2: Then I blow-dried it completely dry.
  • Step 3: Then I carefully applied the treatment strand by strand and combed out any excess product with a comb.
  • Step 4: Then it was time to wait – 20 minutes exposure time so that the active ingredients penetrate deep into the hair.

And now comes the part that many don’t talk about in advertisements:

During the exposure time, my hair honestly looked pretty dull and felt really sticky. Even after blow-drying and straightening, it still looked dull. I already thought: “Great, that’s it again…”

  • Step 5: After the exposure time, I blow-dried my hair completely dry again – while the treatment was still in my hair.
  • Step 6: Then came the most important step: straightening. I had to treat each individual strand about five times at 220 °C with the straightener to seal the treatment.

Immediately after straightening, my hair still felt a bit straw-like. I was really close to believing that this would be another disappointment.

But the real wow moment came later:

After the first wash with the Smoothing Shampoo and Conditioner from KERAZUL.

Suddenly my hair was silky smooth, shone like never before and fell softly over my shoulders. No frizz, no straw feeling. It just looked… healthy.

My Update after Three Months – Does it Really Hold?

Now more than three months have passed. And all I can say is: My hair life has changed.

I used to style forever in the morning, only to have my hair explode again at the slightest drizzle. Today I wake up, comb my hair – and it lies perfectly.

What I’m particularly excited about:

  • My hair shines more, breaks less and feels stronger.
  • It dries much faster – whether I blow-dry it or let it air dry. And it looks straight and well-groomed, without any restyling.
  • I hardly need any time for styling anymore.
  • And I go out confidently again – even in rain or humid air.

It sounds crazy, but I feel like I’ve not only regained control over my hair – but also over my self-confidence.

My Conclusion

I can really recommend KERAZUL to anyone who is fed up with frizz and finally wants straight, healthy hair. I have now also recommended it to some friends who are just as enthusiastic as I am.

If you want to try it out: It’s best to get the Smoothing Shampoo and Conditioner right away. This will make the effect last longer, and your hair will look smooth and well-groomed after every wash.

A keratin treatment at the hairdresser often costs 200 to 500 euros – and many say that the result with KERAZUL at home is even better and lasts longer. Even with shampoo and conditioner, it only costs a fraction.

Over 15,000 enthusiastic customers speak for themselves. For me, it was the best decision in years.

So that you can find the right product, I have linked the page here where I ordered it. Sometimes there are even special offers there – but they are often sold out quickly. If you have any questions, feel free to ask them in the comments below.

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KERAZUL Keratin Treatment

Here’s where I bought it

To the provider


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