Here's a breakdown:
* Sebum is an oily substance produced by the sebaceous glands in the skin.
* It's a complex mixture of lipids, including triglycerides, wax esters, and squalene.
* Functions of sebum:
* Moisturizes the skin: Sebum helps to keep the skin hydrated and prevent dryness.
* Protects the skin: It forms a barrier against water loss and prevents bacteria and other microorganisms from entering the body.
* Keeps the skin supple: Sebum helps to give the skin its flexibility and elasticity.
Other substances found on the skin surface include:
* Sweat: This is a watery fluid produced by the sweat glands.
* Dead skin cells: The outermost layer of skin is made up of dead cells.
* Bacteria: The skin surface is home to a variety of bacteria, most of which are harmless.
* Fungi: Some fungi may also be found on the skin surface.
Let me know if you have any other questions!
