Is it harmful to wash your hair everyday?
Hair washing frequency should be individual and dependent on the work of sebaceous glands. Everyday washing isn’t harmful if you use shampoos indicated for every day use. Those are mildly acidic shampoos which don’t contain soaps. Their role is to preserve a part of the natural hair fat so that the sebaceous glands wouldn’t get the information to produce fat more intensely. Shampoos with a larger ph are used with greasy hair because they dry it out more intensely and they shouldn’t be used everyday.
Shampoos are cosmetics which enable the removal of excess grease from the root of the hair, as well as the dust particles, dead cells, and dandruff. Shampoos have the task of removing grease and at the same time not lead to drying of the hair and skin.
Every person has a different potential for sebum secretion even though the number of sebaceous glands connected to the root of the hair is universal. Grease created by the sebaceous glands envelops the hair and the scalp, preventing water loss and their damage from the external influences. Today, greasy hair and smell created by the sebaceous glands are esthetically unacceptable.
With persons who have dandruff it is recommended to use anti-dandruff shampoos twice a week. If more frequent washing is necessary, then everyday shampoos should be used in between. Root of the hair is under the scalp. It is the only part of the hair which determines hair thickness, growth speed or potential for hair loss. Shampoos have no effect on hair growth or its loss, but hormones, medication, nutrition and also aggressive shampoos can lead to its drying or to scalp irritation followed by redness, itching and peeling.
In children before puberty sebaceous glands work significantly less then in adults, and there is no need to wash the hair every day, plus their shampoos are hypoallergenic.
Spec. Dr. Svetlana Djurisic, dermatologist
Dermatological clinic DERMATIM, Belgrade, Serbia