The Cover Builder Gels also called gel makeup builder. It is a topcoat and high viscosity gel. It is a gel used to cover imperfections, nail biting, essential for tip extensions or even to give a natural tone to the base of the nail to make the French manicure. Thanks to its viscosity its ideal for us for the building layer. We have several shades. Universal Drying UV/LED and drying times are UV 120 Seconds and LED 30 or 60 seconds.