Nails.INC Nails.INC Check Couture Nail Polish Duo 3.6 (4 reviews) £6.00 Where to buy Prices sorted cheapest first. Retailer Price Nails Inc £6.00 was £15.00 Save £9.00 Let's Go Code copied Paste it at checkout. Exclusions may apply. Visit retailer Cancel Browse related categories Best artificial nails Best nail treatments Best nail tools Back to all nail polish