What does holocrine glands produce?

Holocrine glands are specialized glands that produce and secrete substances through a unique method where the entire cell disintegrates to release its contents. This process is particularly characteristic of sebaceous glands, which produce sebum, an oily substance that helps to lubricate and protect the skin and hair.

Sebum is crucial for maintaining skin hydration and providing a barrier against pathogens, which is why the primary function of holocrine glands revolves around producing this substance. While saliva, sweat, and hormones are produced by other types of glands (such as salivary glands, sweat glands, and endocrine glands), they do not utilize the holocrine method of secretion. Therefore, the production of sebum by holocrine glands clearly defines their role in the integumentary system.