Ultra High Viscosity Pink UV-LED Cover Builder Nail Gel Designed to Create Natural and Covering Stretches. Thanks to its High Viscosity, it does not drip, it is self-leveling and turns out to be very simple to draft. Pack of 15 ml. How to Use the Gel Cover Builder After mattifying the natural nail with the Preparation File, Dehydrate the Nails with Nail Prep, let it dry for a few seconds and apply the Primer by air-drying it for a few minutes; Spread a layer of Medium or High Viscosity Builder Gel and catalyze in a Lamp. Directly on the Dispersion layer, apply a High Viscosity Builder Gel Cover Ball, creating the desired elongation and shape and polymerize; Draw the French with the desired French Gels or colored Gels and let it catalyze in a lamp; Cover everything with a layer or, if necessary, a ball of Medium or High Viscosity Builder Gel and again in the Lamp for as long as necessary.