Sebaceous glands secrete?

Sebaceous glands are specialized exocrine glands located in the skin that play a critical role in maintaining skin health and hydration. They secrete an oily substance known as sebum, which is a mixture of fats, waxes, and cellular debris. This secretion serves several essential functions, including lubricating the skin and hair, preventing water loss, and providing a protective barrier against bacteria and fungi.

While perspiration is produced by sweat glands, collagen is a protein primarily produced by fibroblasts in connective tissue rather than glandular secretions. Melanin, on the other hand, is the pigment responsible for skin color and is produced by melanocytes. Therefore, the primary function of sebaceous glands is specifically associated with the secretion of sebum, distinguishing it from the functions of the other substances mentioned. Understanding this role of sebaceous glands can help in appreciating their importance in skin health and the impact of skincare practices.