they work ok on natural nails [SEP] these work okay on natural nails but they do not seem to last as long as some of my older ones that are still in use years later i generally only use them to touch up rough edges or file down broken nails but i could not swear to their durability i cannot imagine them working well on acrylics or gels but since i am not using either right now i can only attest to the fact that they are working on my natural nails and seem to work okay i am just not sure about their durability