Hi,
Eyelashes take about seven to eight weeks to grow back if pulled out.
Trichotillomania is a disorder that urges the sufferer to pull out scalp hair, eyelashes, etc.
Trichotillomania (TTM) is characterized by chronic, repetitive pulling of bodily hair. The sites of hair pulling include the scalp, eyelashes, eyebrows, axillary, body, and pubic area.