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Encyclopedia Reference entry Physiology

Scalp Barrier

The skin’s protective layer on the scalp, and its role in comfort.

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Soumm

4 September 2026

Definition

The outermost layer of scalp skin, which retains moisture and keeps irritants out, functioning as it does elsewhere on the body.

It can be compromised by over-washing, harsh surfactants and scratching.

Supporting it

Gentler washing, less frequent stripping and careful handling generally do more than adding products.

See also: Dandruff.

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