What do Zeis glands secrete?

Zeis glands are specialized sebaceous glands located at the base of the eyelashes. Their primary function is to secrete an oily substance that helps lubricate the eyelashes and the surrounding skin. This secretion plays a crucial role in maintaining the health of the eyelashes by preventing them from becoming brittle and dry, while also providing a barrier against external debris and pathogens.

The oil produced by the Zeis glands contributes to the overall tear film, which is essential for eye lubrication and comfort, but it specifically pertains to lash health. Understanding the function of these glands is important for those studying permanent makeup and related fields, as proper eyelash care is integral to aesthetic treatments. This knowledge also underscores the importance of anatomy and physiology in cosmetic procedures.