My classic lash extensions are natural but noticeable. They won't feel heavy and you'll forget you even have them on! They are faux mink and made to mimic your natural lashes. I customize them just for you! I apply one single extension to one of your lashes until each natural lash has an extension. How long do they last? They last 3-4 weeks before needing a fill. Our eyelashes shed naturally and the extensions will shed with them. We lose about 5-7 lashes a day so in a three-week period of time, 40% of your extensions will be missing, time for a fill! But it always depends on your lash growth cycle and how well you take care of them. Any products that you use on your face after getting extensions shouldn't contain oil. Please arrive to your lash appointment without eye makeup on. If you rub your eyes a lot or have severe allergies, lash extensions may not be right for you. The lash adhesive doesn't contain formaldehyde, hasn't been tested on animals, is vegan and is a high-quality glue made for the eye area.