Eyelashes, the delicate fringes bordering the eyelids, are primarily composed of keratin. This fibrous structural protein is also the main component of hair and nails. The composition provides eyelashes with their flexibility and strength. Like other forms of hair, eyelashes develop from hair follicles present in the skin of the eyelids.
The attributes of eyelash composition are paramount to their function as protective barriers for the eyes. Their structure contributes to filtering sunlight and debris, mitigating potential harm. Throughout history, variations in enhancing or altering the appearance of these features have reflected cultural preferences and evolving beauty standards, highlighting their significance in personal expression.