Eyelashes do regenerate approximately every 2 to 3 months, which is generally in line with their growth cycle of 90 to 150 days as described earlier.
The process is continuous but not all eyelashes are in the same stage of the growth cycle at the same time. Some are in the growing (anagen) phase, some in the transitional (catagen) phase, and some in the resting (telogen) phase. As a result, it may not be noticeable that all eyelashes are regenerating at once, but on average, each eyelash goes through its growth cycle and is replaced within about 2 to 3 months.
