Sebum is a lipid mixture of triglycerides, wax monoesters, free fatty acids, squalene, and cellular debris that is secreted by the sebaceous glands. Sebaceous glands occur in high numbers on your face and scalp, but can be found all over your body except for the palms of your hands and the soles of your feet. These glands, which are usually connected to hair follicles, deposit sebum onto hair for it to be brought to the skin's surface along the hair shaft.
Why is it important?
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