OPI Gelcolor Top Coat - GC030, 0.5 oz $15.99 $10.45 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Polish off your GelColor manicure with a strong top coat. Shine-intense OPI GelColor nail shades cure in 30 seconds under a LED light and last for weeks. Polishes on fast and LED cures in 30-seconds! Use this GelColor Top Coat after our GelColor Base and GelColor shades for a strong, long-lasting manicure. Made in the USA.