OPI Ink (15ml) Nail Lacquer is a shimmering navy blue polish with violet undertones. OPI Ink Lacquer contains no DBP, toluene, or formaldehyde, and features OPIs exclusive ProWide Brush for the ultimate in application. Additionally, OPI lacquer is formulated in such a way that makes it chip resistant. Directions of use: Apply chosen OPI Base Coat. Follow up with 2 coats of chosen OPI nail lacquer. To apply this colour, begin at the centre of your nail, roughly a couple of mm from your cuticle. Let the bristles fan out for maximum coverage and with each brush stroke, brush out to the free edge. Finish with preferred OPI Top Coat to help prevent chipping.