Eyelashes have a protective effect. Upper and lower eyelid edge lashes like Platoon guard, arranged in the palpebral fissure edge. Eyelashes, the second line of defense of the eye. If there is dust and other foreign bodies touched eyelashes, the eyelids will be reflective to close, to protect the eyeball from foreign invasion. Has the shading, prevents the dust, the foreign body, the sweat enters the eye and the cornea, the eyeball protects the function. Eyelashes also prevent ultraviolet rays from harming the eyes.