Mink eyelashes are made of 100% minks fur. Semi-permanent eyelash are made from synthetic micro-polyester fiber, which is identical to human hair. They both last anywhere from 2 to 6 weeks depending on the life cycle of your own natural eyelashes as well the natural PH of your skin type. The dryer your skin is the longer they will last, yet the more oily your skin type the shorter the life span of your extensions.
Though the average cycle of a single lash is about 90-120 days, factors such as your eyelash characteristics, lifestyle and general care of your eyelashes will affect how long your Minky's will last. When applied correctly, eyelash extensions do not make your natural eyelashes fall out.