You should find yourself very lucky that you have such a healthy scalp :D But i know thats not what you want to hear, but this is why your hair and scalp is oily - to help, get yourself a shampoo by the company "MOP" (modern organic products - you can get these at hair salons or ebay) and it is called : Basil Mint shampoo - it works by taking these oils away when washed but it doesnt harm the scapl in anyway, its 100% organic, its also good to use after swimming or hot-tunning as it is a very 'decent' wash, you might find your only washing your hair every other day OR between your everyday was your scalp isnt as bad as what it normaly is! :D Hope this helps!!!