Disappointing, dyed hair feels like straw. There should be a warning that it is not suitable for dyed hair. Some things require professionals

Having tried some keratin treatments both at the hair salon and at home, I would say I am moderately satisfied. The biggest problem was that as long as I had the keratin in my hair, it was very difficult for me to use the straightener. Especially the top of my head, I almost couldn't do at all. The hair was very heavy and I couldn't separate the strands. After washing out the keratin, the hair was much softer and easier to comb.

It actually had an effect.
The process seemed tiring and time-consuming to me.
It lightened my dyed hair.
Maybe next time I would try something with a simpler process

It does its job, just be careful to leave the Keratin for 3 days and then wash it out (just like at the hair salon). Also, it has an oil inside that is excellent. I give it 3 stars due to the smell after drying… unfortunately very bad. If this is fixed, I would easily recommend it!

The whole issue is the mask which essentially keeps the hair smooth without frizz. Otherwise, it did not hold the result for even a month and it was not completely straight. The hair had movement.

I followed the treatment as stated in the instructions, watched videos, but the result only lasted until the first wash. After the second wash, my hair was again damaged... I also used the shampoo of the same brand, and it is definitely not worth the money.

It does not do what it promises, I applied it carefully as the instructions say and I did not have the result I expected, my hair was not straight and it dehydrated it. I gave it a second chance and again the same, it somewhat reduces frizz but it is not a straightening treatment in any case. From me, it is a No

Keratin is excellent, it competes with salon treatments without any problem and has been proven to be possibly even better. I skipped the step that says to wash again after applying the keratin, I left the product for three days and didn't wet my hair at all, nor did I tie it up. The result lasted me almost five months and I have curly hair! (Of course, it wasn't the first time I did keratin. This counts because the second and third time the result is better).
Keratin always lightens the color if the hair is dyed, but it's not a problem with this specific one.
It is easy to apply, I do it myself without any problem. Someone with a lot of hair might need help.
I recommend it, it's worth every euro and it will last for two times!

Excellent product! No comparison to other keratins I have done in hair salons. It's worth the money you give.

In the first week, everything was fine.... Then it started freezing.... The effect lasted for about a month... I don't think I'll buy it again...

Very good. It does what it promises and treats the hair before and after the end of the duration!

The straightening lasts longer with the use of a similar shampoo.
It produces a lot of smoke, pass the hairdryer on the balcony or in a separate room with open windows.
It fades the hair a loooot, even tones below the natural, but all the keratin treatments (even at the salon) made my hair lose color.
Do not wash your hair on the same day. Leave it for 2-3 days and straighten your hair at least once a day. Do not wet it, do not tie it up. This way the result will last much longer.

The 5 stars are too few for this product. I wish there were more to give.
Simply amazing! You wash and dry it without needing a brush for it to be smooth and without frizz.
I used 1/3 of it and I will have two more applications.
It doesn't smoke, it smells beautiful, and it is suitable for both blonde hair and the most difficult ones.
What else could one want? Bravo!!!
TIP: Before applying the keratin, leave your hair slightly damp to make it easier to work with the keratin. Do not completely dry it with the hairdryer. Also, it doesn't require a lot of quantity, it is thickening.
In dyed hair, there may be color alterations, and it is logical, so make sure to combine it when you need to dye it. Do the dyeing after a week for better results