I got it because I saw good reviews but I was disappointed... it caused me an allergy all over my face and crazy itching on my head

Well, let me also make my (terrible) comment about this (terrible) shampoo. Generally, I have an issue with my hair. It gets oily very quickly and falls out a lot. After many shampoos that I have tried, I ended up with this shampoo. And with the first wash I did, I started having a lot of itching on my scalp. So much that my scalp hurt. I do not recommend it to anyone. And I would never buy it again.

I didn't like the purple with the green letters because it makes my hair very hard, the other purple with the red is perfect with the hyaluronic acid.

The hybra makes my hair feel like it's dirty. Very bad. The plain one with hyaluronic acid (not the hybra) is very good. It leaves my hair soft and my damaged hair doesn't frizz.

This specific shampoo is only for dehydrated or dry hair. I have oily hair and when I used it, it caused greasiness on my scalp. However, the other products in the range that are applied to the lengths and ends are very good.