Say "Good-Bye" to mascara and "Hello" to Eyelash Extensions! A set of well-placed lash extensions have an amazing, realistic, finished result. Although, the upkeep can be pretty precious. Don't Get Them Wet After Application! The adhesive used for eyelash extensions needs a full 24 hours to set, but depending on the type of glue used, it may take up to 48 hours, so you'll want to ask your technician for the specifics. Once you can get them wet, make sure to brush through them after washing your face or getting out of the shower so that they keep their shape. Do not use oil based products. Oil can degrade the adhesive and shorten the life of your lash extensions. Don't Pull at Them!! Lash extensions typically last anywhere from four to six weeks, so during the tail end of their run, you may notice more fallout than usual. Don't panic, and resist the urge to tug at the remaining extensions as this could damage your natural lashes. If it gets unbearable, you can try removing them at home by filling a bowl with hot water, then place your face over the surface and allow the steam to loosen them for 10 to 15 minutes. Follow by sweeping a cotton ball dipped in olive oil over your lashes, and the extensions should easily slide off.