How does sebum benefit the skin?

Sebum plays a crucial role in skin health primarily by lubricating the skin and minimizing water loss. This oily substance is produced by sebaceous glands and creates a hydrophobic layer on the skin's surface, which helps to retain moisture. By preventing excessive drying, sebum ensures that the skin remains supple and resilient. This function is vital in maintaining overall skin hydration, especially in environments where moisture loss can occur more rapidly.

While sebum may contribute to other aspects of skin health indirectly, such as providing some level of protection against external irritants, its primary and most significant role is related to lubrication and moisture retention. This is essential for the skin's appearance and function, enabling it to act as an effective barrier and support its natural ecosystem.