So I've been doing this for about three weeks now. I noticed a difference after just a first wash and it keeps getting better and better.
Even some of my friends are just horrified about this, since they are sure my scalp is dirty. But it actually feels even cleaner than before and dandruff caused by winter is all gone! (I've had the same problem every winter as long as I can remember)
But here is my first photo after just three weeks!