I used to use OPI polish and I still use that on my feet but it tends to chip off on my nails very fast as I clean houses for a living, so I found the OHORA nails and my first set. I fell in love with in love so much, and then my second two sets did not stay on very long at all so my four set I tried a different technique to see how long it would last and it lasted me for 13 days so what I did was buffed my nails, wiped them with the cleaning. Wipe put on the nails trim them, added the topcoat, and then stuck them under the LED lamp for 20 seconds only and that is how my nails lasted all of two weeks, my first set I did not use the LED lamp at all my second two sets that didn’t last at all. I use the LED lamp that is just my experience.