Eyelash extensions should always be removed carefully to avoid damaging your natural lashes. Most lash extensions will last up to 8 weeks, though they will usually require infills and maintenance every 2 to 3 weeks. The most crucial rule is this: NEVER PULL LASH EXTENSIONS OFF. Pulling at each lash will prematurely remove it, which is especially detrimental if the lash is still in the ‘anagen’ phase – you could be waiting up to several months for regrowth.