remnants are secreted together with the sebum. The cells are constantly replaced by mitosis at the base of the duct.

Sebum

Sebum is secreted by the sebaceous gland in humans. It is primarily composed of triglycerides (?41%), wax esters (?26%), squalene (?12%), and free fatty acids (?16%). The composition of sebum varies across species. Wax esters

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