If you follow the steps (and dry your hair properly) the result is very good, however the smell that remains in the hair, especially during the summer months, is not nice, it smells so bad that by the second day you already want to wash your hair

It is wonderful, fantastic and I only give 4 stars just because of the smell. Otherwise, it is simply an amazing product. My hair is ringlet curls, hard, I used to first straighten them with a brush because of frizz and then use a straightener. Now I just followed the process exactly and then simply dried my hair. It is a wonderful product, I am amazed, I did not expect it at all... Maybe the strong smell bothers me a little but compared to the result... what can I say!!!!

My hair is curly and frizzy.
I have done this specific keratin treatment twice, and the result is excellent.
Yes, the process is tiring but it's worth it.
The result lasts for four months. The first month it's perfect, then unfortunately the roots grow out and it's not as flawless, but even then with a blow dryer it straightens immediately.
Also, it comes in a generous quantity. I have some left over and my hair is below my shoulders.
Its only drawback is that if you have dyed hair, it lightens the color. Afterward, I use a color mask and the problem is solved.
Since I've looked into it, it's best to dye your hair before the keratin treatment. After that, you only dye the roots and use a color mask for the rest of the lengths. Dyeing ruins the keratin, the color mask does not.
Finally, I should say that I don't use a special shampoo. I use a commercial one with keratin.

If I could, I wouldn't give any stars. After proper use, my hair was black-blue and turned red and became very rough

The result is perfect, it requires patience and the right steps!! The store that served me was amazing and it arrived very quickly!!

Girls, don't buy it... I watched a lot of videos to do the process and I have to say that not only did it not straighten my hair, but my hair smells terribly like burnt rubber (I hope it goes away) and my hair became like straw... extremely, extremely dry.

Disappointing result... I followed the instructions exactly and my hair did not straighten at all... it remained wavy and from being shiny it became dull and dry. Bad result, wasted effort and money.

unfortunately it burned my hair. I watched many videos to follow the correct steps but still my hair was ruined

It did nothing... But I don't mind, I have curly hair, I wasn't expecting miracles.. what bothers me is the awful smell that has stayed on my head for a month now... It doesn't go away with washing...

My hair is straight but it doesn't sit very well at the front so I straighten it, and because it's blonde it's also a bit rough. I did the treatment and I was satisfied, I don't know how long or if it will last, but just by drying it, it's smooth as paper without a straightener. Just for those of you who are blonde, be careful, it changes the color a bit, it turns yellow at the roots

On my hair, apart from turning it orange from dark brown and giving it a straw-like texture, it did nothing else... I struggled to fix them and still, they can't go back to how they were.

Absolutely nothing... the hassle I went through for 3 hours was for nothing... fortunately, I don't regret the money because it was cheap... you get what you pay for.
More specifically, so you understand:
1) My head smelled for 5 days even though I washed it, it was AWFUL... I couldn't even sleep because of the smell... and people around me could smell it too, that was the worst part...
2) After the next 2 washes, all the product came off my head, so it was like I never did keratin at all.
If you want an affordable keratin treatment at home that will last you maybe a month, at most 2, get the Kativa Supremo Brazilero, but the blue package. I've tried it and I can say it was very good for its price and most importantly, my head didn't smell bad at all, on the contrary, it smelled like raspberry

For its price, it's worth it, it doesn't have a strong smell, it makes the hair less frizzy and straight but not pin-straight. I didn't have trouble applying it myself, following the instructions to the letter. Just because I have fine hair and a previous perm (1 year ago), my hair was quite damaged and I used the straightener at 190-200 degrees. Time will tell how long it lasts

It didn't work on my hair. At first I thought I was doing something wrong but no, I did exactly as instructed. The process after applying the mask was very difficult because the hair did not detangle easily. I wonder if you really have to rinse them after the straightener or if that's a wrong instruction..;

Very good for its price! I have curly hair and the result lasted about 1.5 months. My hair became smoother and easier to comb, without frizz. The application takes some time and attention, but it's worth it. I will buy it again!

It does what it promises, but you need to be patient especially if you do it by yourself and if you have a lot of hair, it’s definitely worth the hassle though. I have already used it twice and I no longer need to burn my hair with a straightener, especially in the summer it’s a lifesaver. Of course, it doesn’t give you the perfect salon result but the hair doesn’t frizz at all, it lasts as it says and obviously it’s very economical. Four stars because it sticks and makes straightening difficult and it doesn’t give completely straight hair

Initially, here in the description it didn't say that for very light hair you turn purple. Anyway, I said, let me turn purple. I have hair that I just wanted not to frizz. It did nothing. Wasted money and unnecessary trouble for my hair.

Indifferent...completely...the blue packaging is better...it's like I didn't even do keratin at all. I won't buy it again, but you get what you pay for...it would have been better to pay triple at a hair salon...the hassle and the smell I had on my head for the first few days were for nothing!!

Anyone who has bleached hair, don't even try it as a joke. From red, my hair turned the color that the bleach did on its own. Other than that, it's fine.

The product is fantastic. I have very curly African-type hair and it straightened. I wash my hair, dry it, and I'm ready

It is the best thing I have done for my hair, it doesn't frizz, just dry it and you're ready, while my hair would frizz at the slightest, I highly recommend it 10/10

It caused me dry scalp and intense itching on my head. Additionally, it has an unpleasant smell that lingers on the hair and does not wash out with shampooing. Other than that, it indeed does what it promises.

Very good, I don't even need to straighten my hair with a brush.. my hair, in the meantime, is wavy, neither straight nor curly… I recommend it

I have been using it for 2 weeks now and it works great! I am very satisfied. For your information, the whole process takes quite a few hours (about 4-5)

I followed all the instructions, it did absolutely nothing, it softened my hair a bit and opened it up while I have wavy hair, not even curly, wavy with fine strands that frizz. The mask, if you apply it after washing your hair with the special product and then dry your hair and wait 15 minutes to rinse it out with a comb and apply the mask, does NOT DRY the hair properly as a girl showed in a video unless you use a small amount! In other words, it only softened it but does not have the salon keratin effect that many claim here, let's not go crazy!

It did absolutely nothing to my hair, which is curly; it left it just as curly and dry, even though I went over each strand with the iron 8-9 times. The only thing it did was actually lighten the color by definitely two to three shades. It's a shame, the effort isn't worth it.

easy instructions, easy application, not very time-consuming, and the result is on par with a salon! I don't know how long it will last, but so far in humidity and rain, the hair remains straight without the slightest frizz! vfm!

I have been doing the treatment for a week now and I have a very good result. Unfortunately, however, we struggled a lot to do it, about 4 hours. I have curly, thick, and long hair, and it was extremely difficult to dry the material well, even though we used two professional hairdryers during the drying process. It was also very difficult to comb the hair before passing the straightener, as they stick together because of the material. EXTREMELY TIRED AND DIFFICULT to attempt it alone at home. During the straightening process, you need very small sections for a successful result. We passed each section 7-8 times. The 4 stars are for the result and the price. The duration will show.

Really perfect result. I have a lot of frizzy and curly hair. I always used a straightener to style my hair. After using the product with a simple drying, my hair is straight without frizz. I didn't expect it to have results like the straightener. I don't know how long this will last. I should also mention that I use sulfate-free shampoo and a keratin mask. However, the process is quite demanding. It doesn't have a nice smell, especially when using the straightener, and generally, it requires several hours of standing.

Really perfect result. I have a lot of frizzy and curly hair. I always used a straightener to style my hair. After using the product with a simple drying, my hair is straight without frizz. I didn't expect it to have results like the straightener. I don't know how long this will last. I should also mention that I use sulfate-free shampoo and a keratin mask. However, the process is quite demanding. It doesn't have a nice smell, especially when using the straightener, and generally, it requires several hours of standing.