What is the function of the sebaceous glands?

Sebaceous glands play a crucial role in maintaining the health and integrity of the skin. Their primary function is to produce sebum, an oily substance that acts as a lubricant for the skin and hair. This natural oil helps to moisturize the skin, preventing it from becoming dry and flaky. Additionally, sebum forms a waterproof barrier that helps to protect the skin from external elements, such as bacteria and pollutants, while also contributing to the skin's overall elasticity and softness.

In contrast, the other choices refer to different functions or structures associated with the skin. The production of sweat is carried out by sweat glands, which have a distinct role in temperature regulation and waste excretion. Melanin, responsible for skin coloration and UV protection, is produced by melanocytes, not sebaceous glands. The detoxification of the skin is not a primary function attributed to sebaceous glands; instead, this process primarily involves other organs such as the liver and kidneys. Hence, the correct explanation highlights the unique and specific role of sebaceous glands in skin health.