Eyelash extensions are semi-permanent synthetic individual extensions that are glued on, one by one onto the natural lashes by using a specially formulated safe glue that lasts 3-4 weeks, the result is a beautiful luscious and long set of upper lashes. All eyelash extensions are semi-permanent and come in many different lengths, they are also known as grafted eyelashes. At Brighton Beauty + Medispa we use graft-a-lash extensions these are professional extensions used by our experienced therapists. How long do they take to apply? The procedure will take approximately 1 hour for a full set of extensions and ½ hour for a half set. How long will they last? The extensions will last approximately 2-4 weeks. A real eyelash has a life cycle between 25-28 days, and as your natural lashes grow and fall out, so will the synthetic ones that are attatched to the natural lash. If your hair and nails grow quickly that may indicate that your lashes also are growing, shedding and renewing themselves quickly, so you may find that your lashes may need refilling every 2 weeks, wheras someone with slow hair growth may last 4 weeks.