Hi Deepika, Though KZ is a standard and effective treatment for dandruff currently several fungal infections have become resistant to it. You could try oxiconazole lotion which you need to apply overnight and shampoo next day. I would recommend you to also shampoo three times a week atleast since your scalp is oily. Dandruff shampoos will dry your hair out so use it once a week and at other times use a normal shampoo with conditioner whatever suits you. Also you need to get the dandruff scales tested whether it is actually fungal or not (scalp psoriasis can also cause scales) and for that you need a dermatologist. There is a test called KOH mount by which they can see the fungus under the microscope or alternatively you could go for a fungal culture and sensitivity...all this can be done by the dermatologist. If fungal infection is confirmed you could go for antifungal tablets like fluconazole 150mg once a week for 4 weeks. However this medication should be used with caution as in if you are married and planning a pregnancy or already pregnant it is not recommended. Please consult a dermatologist before you go for fluconazole. Hope this helps.