Semi permanent lashes mink silk extensions are designed to give you thicker and longer lashes individual very fine and perfectly shaped to look like the natural eyelash silk lash extensions are applied and bonded to your individual lashes using our specially developed adhesive one smart lashes extension is applied at a time directly on to your natural eyelash in a specific sequence this process is repeated until you have a full set and takes around 130 to 145 hours to complete a ver