Sebocyte
Sebocyte — a specialized cell within the sebaceous gland that produces and releases sebum, the skin's natural oily secretion. Sebocytes mature while filling with lipids and then rupture to release their contents onto the skin surface through the hair follicle, a process known as holocrine secretion.
Key points
- Sebocytes make up the sebaceous glands, which are usually attached to hair follicles in a pilosebaceous unit.
- They synthesize a lipid-rich mixture including triglycerides, wax esters, and squalene that forms sebum.
- Sebum release occurs by holocrine secretion, meaning the entire cell breaks down to deliver its oily contents.
- Sebocyte activity is influenced by hormones such as androgens, which can increase sebum production.
- Excess or altered sebum output from sebocytes is one factor associated with oily skin and acne-prone conditions.
Frequently asked
What do sebocytes actually produce?
Sebocytes produce sebum, an oily blend of lipids such as triglycerides, wax esters, and squalene that helps lubricate and protect the skin surface.
Do hormones affect sebocytes?
Yes, androgens and other hormones can stimulate sebocyte activity and increase sebum production, which is why oiliness often changes during puberty and hormonal shifts.
Related topics
This is a foundational entry in the SYNC Skin Encyclopedia and is expanded over time. Educational information only — not medical advice.
