Semi-permanent eyelashes extensions come in a range of different treatments to help you choose a style that suits you. Nope. You’ll want to show up to your appointment with clean skin and no eye makeup. That means absolutely no eyeshadow, eyeliner, and/or mascara. Eyelash Extensions have become a staple in the beauty industry, and many women use the ease of extensions to minimize time spent in front of a mirror every day.