Prowide brush provides a perfect streak free finish to any nail style High quality polish lasts longer than the competition Nail salon quality OPI polishes have a great variety of colors. Over 450 different colors are available to satisfy your taste and fantasy. OPI pulls out new collections that have new colors, grouped thematically. To distinguish different colors and to help you choose a color by your mood the polishes have incredibly funny and catchy names, that relate to the theme of the collection.