This is a nail strenghthening polish, which you apply every third day, for 10 days. After this time, my nails did feel and appear stronger and healthier, with a less of a chance of breakage. I also liked that the polish has a super shiny finish. What I don't like about this product, is that it is yellow-toned in the bottle. In the beginning, it does go on clear, but after reapplying it, my polish did take on a very slight yellow-tinge.