GENERAL HISTOLOGY

Detailed explanation-1: -Sebaceous glands are microscopic glands found in your hair follicles that secrete sebum. Sebum is an oily substance that protects your skin from drying out.

Detailed explanation-2: -The glands secrete sebum through the sebaceous duct into the follicle and onto the surface of the skin. Sebum, a complex lipid mixture, acts as an emollient to the hair and skin and may have a protective function. Sebaceous glands enlarge and become functionally active during puberty.

Detailed explanation-3: -The sebaceous glands produce sebum through holocrine secretion, a process of programmed cell death. Specialized cells, called sebocytes, dissolve and release sebum into the sebaceous glands. Sebum travels through the follicular duct that connects the sebaceous gland to the hair follicle.

Detailed explanation-4: -7 in reference). Sebaceous glands secrete the oily, waxy substance called sebum (Latin: fat, tallow) that is made of triglycerides, wax esters, squalene, and metabolites of fat-producing cells.