Research studies have shown that only coconut oil application over scalp is beneficial, nothing else. So leaving that oil matter to your personal decision. Your condition has to be differentiated from scalp psoriasis which mimics dandruff with excessive hair loss. So better consult a skin specialist. If its dandruff only, application of a ketoconazole shampoo over scalp and rinsing your hair thoroughly after 20 mts of application; on every alternate day initially and later twice in a week will be helpful.