- Extreme GEL Top Coat by Essence. Gel topcoat for nails. It is an indispensable product for any nail styling and your favorite manicure. It is designed to be applied to colored varnish in order to extend its durability and give it a beautiful glossy finish. At the same time, it can be used alone to strengthen natural nails and give them shine. When using Top Coat, no LED or UV lamp is required, which will significantly speed up the work. The product is colorless. Topcoat. Has a colorless formula. Extends the durability of the varnish. Does not require the use of a UV / LED lamp.