How long do lash extensions last? Lash Rx eyelash extensions will shed out with
your natural lashes which have a life cycle of 2 to 3 weeks. Remember,
these are semi-permanent not permanent. If you never get a refill you
can expect your last extension to shed out in about 2 months – but if
you want your lash extensions to look full and fresh everyday, refills
are recommended every 2 to 3 weeks to maintain a full set.