It is simply amazing. The secret is to leave it on your hair for at least 30 minutes, with a shower cap on top. So it's not for every wash.
Afterwards, your hair doesn't even need to be combed. If you don't have 30-40 minutes to spare to let it work, it's better to use another product.
I apply it on my scalp first, gently massage it, and then spread it on the rest of the length.
Even better if you first exfoliate your scalp with a peeling (especially if you have a problem with oiliness).
**I have thin hair and have been bleaching it for years

I bought it as it is supposed to work for oily hair and dandruff. It failed in both cases. On the contrary, it makes the hair much heavier, so if you wash it in the morning, it looks greasy by evening. I didn't notice any difference in dandruff. Maybe it works for dry scalp with dry skin, as it is supposed to cover those cases. Yes, it makes the hair very soft, but a good conditioner applied to your scalp will do the same job. It was a waste of money.