Itching can have several causes. Most often it is a side effect of dandruff. Nizoral Expert Daily Care Shampoo contains a plant based ingredient called Crinipan PCM green which down-regulates the fungi that causes dandruff. Besides it contains Salicylic Acid and Glycerol that also stop the itching. 95% of the consumer that have tested the shampoo confirmed that the itching was reduced upon 1st wash.*