I get Tinea Versicolour over my body off and on for the last couple of year (they almost ezcema like white marks) and I lather my body with head and shoulder and let it dry completely before washing it off. I do this for a couple days until the head and shoulders kills off the bacteria and the white marks just disappear like magic!
Head and shoulders contain a crucial ingredient for killing Tinea Versicolour which is Selenium Sulfide and that is why it works so well and is always effective for me.
The reason its so amazing for dandruff is because dandruff is also a fungal type infection of your scalp.
I always keep Head and shoulders on hand just in case my body feels like breaking out into white spots. :)
After using scalp feels fresh. If I've used a product that reacts with my skin I no I can use this to go normal again. Not what I'd recommend for the condition it leaves hair in. I feel it's more aimed at scalp. Get for hubby and great on his hair