Dior Gel Coat Recreate the look of a gel manicure with Dior's Gel Top Coat. Nails appear stronger and thicker and are smoothed with a brilliant lacquered effect. It extends the life of your manicure but can simply be removed with nail polish remover when you're ready for your next polish change. How To Use: Apply the Gel Coat on dry nail enamel. For a full shape and maximum shine, apply a generous drop with the brush and delicately spread it in a thick layer down the nail. Designer About Dior:.