What is Sebum? Why Does Sebum Production Increase?
Sebum is the skin’s natural oil layer that maintains moisture balance and strengthens the skin barrier. However, when sebum production is excessive, it can lead to acne, blackheads, and oily skin appearance; when insufficient, it may cause dryness and sensitivity. Therefore, understanding what sebum is, why it increases, and how it can be kept balanced is critical for healthy skin.