What is the primary function of sebaceous glands in the skin?

The primary function of sebaceous glands in the skin is to produce sebum, which is an oily substance that serves to lubricate and moisturize the skin and hair. Sebum plays a critical role in maintaining the skin’s barrier function, which helps to prevent water loss and keeps the skin supple and soft. Additionally, it has antimicrobial properties that can help reduce the risk of infections by creating an unfavorable environment for pathogens to thrive.

The ability of sebaceous glands to produce sebum is particularly important for maintaining healthy skin. When these glands function well, they contribute to a balanced skin environment. However, if they become overactive or underactive, it can lead to various skin conditions such as acne or dryness.

While collagen is crucial for skin elasticity, it is primarily produced by fibroblasts, and not by sebaceous glands. The regulation of body temperature is mainly managed by sweat glands, and while sebaceous glands contribute to skin protection, their primary function is not the direct formation of a protective barrier against bacteria, but rather the lubrication of the skin and hair through sebum production.