Get the secret to long-lasting nail color with the OPI Hello Kitty GelColor Collection! Soak-off gel lacquer cures in 30 seconds under an LED light for intense shine that lasts for weeks. The most asked for gel color brand in the industry, OPI offers rich, highly pigmented color that’s formaldehyde-free and easily removed. Feel blue-tiful with Hello Pretty, OPI’s newest shade of dark purple navy. 0.5 fl. oz.