I bought this because I have a very sensitive scalp that often ends up being sore/painful. (I don't struggle with dandruff, so this was only bought for sensitivity) - I noticed already after the first wash of my hair that my scalp is calmed and less uncomfortable - both the same day and days after.
As pointed out in other feedback here, it is very runny and it's hard not to use too much, so personally mine has run out quickly because I struggle with the same, therefore I deduct one star for that, but it has improved my problem ♥