What is the primary function of sebum?

Sebum's primary function is to hydrate and lubricate the skin. It is an oily substance produced by sebaceous glands, which are located in the skin. Sebum plays a crucial role in maintaining the skin's moisture balance by forming a barrier that helps to prevent water loss. This lubrication is essential for keeping the skin flexible and preventing it from becoming dry and flaky.

In addition to hydration, sebum also helps to maintain the acidity of the skin surface, which can deter the growth of harmful bacteria and fungi. However, its main role revolves around maintaining proper skin hydration and providing essential oils that keep the skin supple and healthy.