We will be very distressed. We have just washed our hair, but why only 2 days have passed before our scalp starts to itch unbearably.
Of course, you should wash your scalp only if you feel itchy. This varies from person to person. It should be washed every two days or once in three days. This is a common figure.
If you wash it every day, shampoo will damage your hair, and the scalp oil is a natural protective film and will be washed away.
Scalp itching is caused by the sebaceous glands secreting a large amount of sebum on the scalp. The oil absorbs dust and clogs the pores, causing itching.
Oil secretion causes the colonization of Malassezia and other microorganisms, leading to allergic reactions on the scalp and further causing itching.
If you don't wash your hair for a few days, you will get dandruff. The scalp is very fragile and sensitive, and fungal infection of the scalp or scalp allergies can lead to dandruff.
It starts as white scaly patches, and the hair turns gray. If the hair is not washed, it will gradually expand, and small satellite-like scaly patches will appear around it.