hello everyone! I am 28 years old I have no health issues. You see my problem is different I am encountering itching and flaking of my scalp which is coming our from my head in the form of white dandruff. I have tried garnier and others all by myself as over the counter medication. When nothing had worked I went to the doctor who prescribed me a medicated shampoo. The only difference which I can figure out is the presence of selenium sulfide in this shampoo. I want to know how to use selenium sulfide for dandruff?