Why are eyelash extensions so expensive?

Applying a set of eyelash extensions is a very intricate skill that should only be done by a highly trained and skilled professional. Lash techs work on the delicate eye area with sharp tweezers and strong adhesives, medical grade quality adhesives to be precise and so are expensive to purchase. The individual isolation of every suitable natural lash requires skill and time, with infills and full sets taking anywhere from 1-3 hours to complete, therefore this is not a speedy or cheap treatment for the therapist to offer.