What is the function of sebaceous glands?

Sebaceous glands play a vital role in maintaining healthy skin and hair by secreting sebum, an oily substance. Sebum is composed primarily of lipids and serves several important functions. It helps to moisturize and waterproof the skin, preventing it from becoming dry and brittle. Additionally, sebum provides a natural barrier against bacterial infections, as its oily nature can inhibit the growth of potentially harmful microbes.

Moreover, the presence of sebum on hair contributes to its condition and shine. By maintaining adequate moisture and creating a balanced skin environment, sebaceous glands are essential for skin health and appearance. This understanding highlights why the secretion of sebum is a fundamental function of these glands.