die Kopfhaut
scalp
The skin that covers the skull and from which hair grows.
Dieses Shampoo soll bei trockener Kopfhaut helfen.
This shampoo is supposed to help with a dry scalp.

scalp
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scalp
The skin that covers the skull and from which hair grows.
Dieses Shampoo soll bei trockener Kopfhaut helfen.
This shampoo is supposed to help with a dry scalp.

This word is a clear compound of 'der Kopf' (the head) and 'die Haut' (the skin). So it literally describes the skin on the head.
Eine gesunde Kopfhaut ist die Basis für gesundes Haar.
A healthy scalp is the basis for healthy hair.
'Kopfhaut' (scalp) is often combined with adjectives that describe its condition. Common examples are 'trockene' (dry), 'juckende' (itchy), 'empfindliche' (sensitive), or 'fettige' (oily) Kopfhaut.
Bei Kälte leide ich oft unter juckender Kopfhaut.
In cold weather, I often suffer from an itchy scalp.
In connection with care, the verbs 'massieren' (to massage), 'pflegen' (to care for), and 'schonen' (to be gentle on) are often used.
Man sollte die Kopfhaut beim Waschen sanft massieren.
You should gently massage the scalp when washing your hair.
skin
'die Haut' and 'die Kopfhaut' are closely related. 'Haut' is the general word for the outer layer of the body. 'Kopfhaut' is only the skin on the head, where the hair grows. The words can be confused because the scalp is, of course, also skin. If you are speaking generally about the body, 'Haut' fits. If it is about hair, dandruff, itching, or care of the head, 'Kopfhaut' is more precise.

Nach dem neuen Shampoo juckt seine Kopfhaut.
After using the new shampoo, his scalp itches.
Im Winter wird die Haut oft trocken und braucht mehr Pflege.
In winter, the skin often becomes dry and needs more care.