When used properly, lashes extensions will not damage your natural lashes. Each natural eyelash has its own growth cycle and basically sheds naturally in about two months, whereas each of our eyelash extensions is attached to the natural eyelash in pairs and then sheds with the natural eyelash. Using the right eyelash extensions will not affect the growth cycle of natural lashes. Be careful to choose the right eyelash extensions for yourself so that your natural lashes are not damaged.