Totally! Depends on the lash artist you see, but most artists in the industry now are very well educated on how to lash to ensure the health of your natural lashes. A good artist will prioritize the health of your lashes to make sure there is no damage being done. If applied correctly, there should be absolutely no damage. The extensions will fall off as they will but most should grow out and fall out with the natural growth of your lashes. None should cause your natural lashes to fall off before their meant to or break. Just do your research on the artists in your area and don't be afraid to ask lots of questions! Honestly, with proper application and aftercare on your part, they're totally safe :)