Hi. How do I deal with dandruff. I've used shampoos and oils but my dandruff never goes away. I've had the problem for years.?

Dandruff. You may need a scalp biopsy to determine cause of this dandruff. Using a high potency steroid ointment may help too . Selenium Sulfide and nizoral (ketoconazole) shampoo can be tried as well. Avoid oils as they may cause too much irritation.