COLLECTION: Opi / O.P.I. products, the world's leading professional nail products, have combined high-performance technology with a strong sense of colour since their creation. Existing in a multitude of colours, from natural to the brightest colours, from the timeless classics to the most trendy colours, these varnishes become fashion accessories in their own right. Product Details: OPI nail varnish. Formaldehyde-free, toluene-free and phthalate-free. Use: 1. A layer of OPI Base Coat 2. Two coats of OPI nail polish 3. A coat of OPI Top Coat to protect the colour and for a glossy finish 4. Finish nail polish application by applying a few drops of Avoplex Nail & Cuticle Oil to the cuticles and massage.