What is dandruff? Are anti-dandruff shampoos effective?
The skin is constantly being renewed, which means that as new cells are made in the underlying layer, dead cells shed and new cells replace them. So the layer of epidermis or tissue or outer skin is constantly being replaced. The cells are pushed out, which eventually leads to their death and separation. In most people, these cells isolated from the skin are so small that they cannot be seen with the naked eye. But certain factors accelerate the process of epidermal regeneration, especially on the scalp. Experts believe that in people with dandruff, skin cells may grow and shed in just 2 to 7 days, compared to people without dandruff, which lasts about a month. It is normal for about 487,000 cells per square centimeter to die and detach after washing the head. But the rate is much higher in those with chronic or acute dandruff, at more than 800,000 cells per square centimeter. This causes the dead cells to separate into large, fatty masses. These scales are so large that they can be se...