It is very chronic leading to fall of eye lashes & thickness of lid margin,very difficult to CURE but you can get relief by following procedure

Have a pinch of sodium bicarbonate (mitta soda in common language) along with cotton in a cup (100ml water)boil it& let it be cool to bearing temperature, wash lid margin with cotton ,white scally material is soluble in sodium bicarbonate, do it daily at least for a month & continue alternate day  for 3 months,&after cleaning when lids become dry,apply  optithrocin eye ointment & corticosteroid eye ointment at  least 3-4 times for months on lid margin .You will certainly get relief but not CURE.For dandruff in the scalp you consult dermatologist (M D  or D N B dermatology)