Inspired by eastern Europe OPI Polka. Com Nail Lacquer features a combination of blue & violet glitter particles which will leave your nails looking dazzling & vibrant. This versatile polish from the Euro Centrale Collection can be used on its own or with another colour underneath for a super eye-catching look. OPI Polka. Com Nail Lacquer doesn't contain nasty chemicals like DBP toulene & formaldehyde meaning it's safe for regular use. It goes on easily & smoothly thanks to the exclusive Pro Wide Brush. Directions of Use: Start application in the centre of the nail a few milimeters up from the cuticle Use the brush to work the polish upwards & outwards in clean strokes For best results use a base & top coat