Electronic switch. In electronics, an electronic switch is an electronic component or device that can switch an electrical circuit, interrupting the current or diverting it from one conductor to another. Typically, electronic switches use solid state devices such as transistors, though vacuum tubes can be used as well in high voltage applications.
You may need to switch between types of shampoos if one type controls the dandruff at first but later loses its effectiveness. How often you should use dandruff shampoo varies from daily to a couple of times a week. Check the directions on the bottle. When shampooing your hair, rub the shampoo into your scalp well. Leave the shampoo on your head for 5 minutes, or as directed, before you rinse.
But, for some, it irritates the scalp and can cause more skin cells to grow. The extra skin cells die and fall off, making them appear white and flaky in your hair or on your clothes. Why malassezia irritates some scalps isn't known. Dry skin. Flakes from dry skin are generally smaller and less oily than those from other causes of dandruff.