Product Overview Part of Gwen Stefani’s OPI range, OPI Gwen Stefani Don’t Speak Pure 18K Gold Top Coat 15ml is a gorgeous top coat which truly does sparkle. Benefits Containing gold leaf flakes dusted with glitter, OPI Don’t Speak Pure 18k Gold Top Coat, will add glamour to any occasion making it perfect for this party season. Perfect for wearing over other OPI Lacquer shades to create a gold foil texture it is a truly luxurious top coat. Key Technology The OPI Don’t Speak Pure 18k Gold Top Coat features OPI’s exclusive Pro Wide Brush which makes for easy & fast application.