KERAZUL Keratin Treatment: My 3-Month Test (Before & After)

On certain forums and on TikTok, you keep hearing about a supposedly revolutionary product that's said to keep unruly, frizzy hair smooth and shiny for months — with no trip to the salon: the KERAZUL Keratin Treatment.

It seems to be something of an insider tip among women who are simply tired of blow-drying, straightening and styling for hours — only for their hair to stand up in all directions again at the first drizzle or on a humid day.

Honestly, at first I thought: “This 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 into your hair — only for the result to be ruined at the faintest hint of moisture.

Instead of shiny and smooth, your hair suddenly looks puffed up, 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 those products only damage your hair further. It gets more brittle, drier, loses its shine.

And the worst part is: it's long been about more than hair. It's about the feeling of not being pretty enough. About constantly worrying how you look. About hiding — or cancelling plans because it's raining.

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

“Maybe KERAZUL really is different…”

I was skeptical. I'd already tried so much:

• Countless drugstore products that lasted a few hours at best.
• Flat irons that made my hair brittle over time.
• Expensive salon keratin treatments where my eyes watered from the formaldehyde.

But nothing ever changed my hair for good.

Still, KERAZUL wouldn't let me go. Maybe because I kept finding reviews on forums and TikTok that sounded extremely convincing. Many women described how their hair suddenly stayed smooth for weeks or even months — even in rain or high humidity.

That made me extremely curious. I wanted to find out whether it really was something different from all the products I'd already tried.

So I started to research. KERAZUL is based on a special technology: KeraSmooth³ Technology. It's designed to do three things at once:

• Fill the hair structure from within, so the hair no longer absorbs moisture.
• Form an invisible protective layer that keeps out rain and humid air.
• Nourishing oils provide shine, smoothness and a healthy look — without making the hair greasy or heavy.

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

I hesitated for a long time. On the one hand, I didn't want to be disappointed again. On the other, I thought: what if this time it actually works? So I ordered it — to find out whether it could really change my hair life, too.

How does the application work?

In case you're thinking of trying it yourself: here's my complete experience. The application really was a bit more involved than with normal hair products — but for me, absolutely doable.

• 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.
• Step 3: Next I applied the treatment strand by strand and combed out any excess product.
• Step 4: Then it was time to wait — 20 minutes for the active ingredients to penetrate deep into the hair.

And now comes the part many ads don't tell you about:

During the processing time, my hair honestly looked pretty dull and felt really sticky. Even after blow-drying and straightening it still looked matte. I already thought: “Great, here we go again…”

• Step 5: After the processing time I blow-dried my hair completely again — with the treatment still in it.
• Step 6: Then came the most important step: straightening. I had to go over each strand about five times at 220 °C with the flat iron to seal in the treatment.

Right after straightening, my hair still felt a bit straw-like. I was really about to believe this would be another disappointment.

But the real wow moment only came later: after the first wash with KERAZUL's Smoothing Shampoo and Conditioner.

Suddenly my hair was silky smooth, shinier than ever, and fell softly over my shoulders. No frizz, no straw feeling. It just looked… healthy.

My update after three months — does it really last?

It's now been over three months. And all I can say is: my hair life has changed.

I used to style forever in the mornings, only for my hair to explode again at the slightest drizzle. Today I wake up, comb my hair — and it sits perfectly.

What I love most:

• 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 smooth and groomed straight away, with no restyling.
• I barely need any time for styling anymore.
• And I go out confident again — even in rain or humid air.

It sounds crazy, but I feel like I've regained control not just over my hair — but over my self-confidence.

My verdict — and where to get KERAZUL

I can really recommend KERAZUL to anyone who's had enough of frizz and finally wants smooth, healthy hair. By now I've recommended it to a few friends, too, who are just as thrilled as I am.

If you want to try it: it's best to grab the Smoothing Shampoo and Conditioner right away. They make the effect last longer, and your hair looks smooth and groomed again after every wash.

A keratin treatment at the salon often costs 200 to 500 euros — and many say the result with KERAZUL at home is even better and longer-lasting. Even with shampoo and conditioner, it costs only a fraction.

Over 1,500 enthusiastic reviews speak for themselves. For me, it was the best decision in years.

So you find the right product, I've linked the page here where I ordered it. Sometimes there are even special offers there — but they often sell out fast.

Frequently asked questions about KERAZUL