In contact with the air, the sebum oxidizes and becomes black, hence the appearance of black dots. So, contrary to popular belief, it’s not dirt.

We find Blackheads mainly in areas where the sebaceous glands, which produce sebum, are located. In people with mixed skin, blackheads often appear in the famous T-zone of the face that includes the forehead, nose, and chin. Blackheads can also appear on the chest, back, and shoulders.

トップ   編集 差分 バックアップ 添付 複製 名前変更 リロード   新規 一覧 単語検索 最終更新   ヘルプ   最終更新のRSS