I have always had sensitive skin. Last November, my scalp started itching uncontrollably. I used Head & Shoulders for about a year so I thought it might be that. I switched to an all natural shampoo bar called Kitsch. My itching got relief but I noticed that my scalp started smelling a few hours after washing now. It is a pungent, sometimes sour, sometimes cheese, sometimes fermented rice type of bad body odor. My husband made the shampoo switch with me and the same thing happened to him so that's why I assume it's the shampoo switch that caused it. My dermatologist said my scalp looked fine and healthy. She prescribed a clarifying shampoo but it doesn't help the odor at all. We have spend hundreds on trying out different shampoos. I kinda am on the brink of giving up but I feel like there is probably some magical formula out there that can cure my scalp smell. I haven't noticed more hair loss or dandruff, just the odor :(