No. Always file in one direction only, from the outer edge toward the centre. Filing back and forth puts stress on the keratin layers and is a common cause of nail splitting and peeling.

Yes. The 180 fine grit is gentle enough for fragile, soft or sensitive nails. For extra care, file gently underneath the nail edge rather than across the top surface to reduce the risk of splitting further.

Rinse with warm soapy water after each use and dry thoroughly. You can also finish with a disinfectant spray. Unlike emery boards, there is no need to replace it.