I have this mask and the corresponding oil from the same series. I haven't been using them for a long time, but I have formed an opinion.
In the positives:
The mask truly leaves your hair light and elastic from the first uses, and I also noticed shine, something I have never seen in my hair before, which usually looked dull. However, it doesn't help with frizz (at least for curly hair).
It has relatively pure ingredients, without parabens, silicones, etc.
In the negatives:
From the first times I applied it, I experienced terrible dryness, dandruff, and itching on my scalp, which I can't seem to treat no matter how hard I try.
The scent is unpleasant. At first, when you open it, it deceives you and smells like tropical fruit, but very soon a foul odor emerges. Some people are more tolerant of this, but if you have a sensitive nose and are easily bothered, I wouldn't recommend it. Especially since you have to leave it on your head for 7 minutes.
In terms of quality-price ratio, I believe it is worth its money, as it has results and a sufficient quantity...