This is the 5233rd most frequent Japanese word.
頭皮
Scalp.
In this sentence, '頭皮' (scalp) is used to refer to the scalp as part of a health or relaxation context.
頭皮のマッサージをするとリラックスできる。
Massaging the scalp can be relaxing.
Here, '頭皮' is used to refer to the skin of the scalp in a protective skincare context.
頭皮に日焼け止めを塗るのを忘れないでください。
Don't forget to apply sunscreen to your scalp.
In this example, '頭皮' is used to describe the condition of the scalp as it pertains to health concerns.