Finally, I found a shampoo that leaves my hair really dry. You can't imagine how greasy my hair is. I have washed it in the morning and at noon, if I go to places or touch it with my hands a little more, it has already become oily. I don't expect this or any other shampoo to thicken the hair or grow hair, no shampoo can do that without adding tons of chemicals, taking vitamins, and eating what you should. What I noticed, though, is that it left my hair completely dry and it stayed that way for 3 days, which is unprecedented for me. I will write more comments in due time.
Edit: I want to add how satisfied I am. My hair was so oily that it looked almost wet when I hadn't washed it for a few days. Now with this shampoo, when I leave it for a few days (because it's not good to wash it very often), it just sticks my hair together but doesn't look oily, I would say it just looks uncombed. I will no longer buy another shampoo, I found what I needed. And I use a very small amount, so it lasts a long time.