What is the primary function of sebaceous glands?

The primary function of sebaceous glands is to produce sebum, an oily substance that helps to lubricate and protect the skin and hair. Sebum plays a crucial role in maintaining the skin's integrity by preventing dryness and creating a barrier against external pollutants and bacteria. This natural oil keeps the skin hydrated and helps to maintain its elasticity, which is essential for healthy skin.

While sweat production is associated with sweat glands, the absorption of moisture is not a function of sebaceous glands, and they do not create hair follicles but are instead associated with the follicles themselves, delivering sebum to the surface of the skin and hair.