Builder is a thick viscosity, non-leveling, clear building gel that allows you to create an apex that will stay where you put it without leveling or flooding the cuticle/sidewalls. It can help provide extra durability and strength when sculpting extensions. Because of its thick viscosity, if applied too heavy, it will have high heat transfer. Adding a small amount of builder to Sculpt & Shine can be done to alter viscosity of Sculpt & Shine to suit every tech’s needs. UV Curing Time Freeze: 20 sec Full Cure: 2 minutes/Hybrid Lamp (low heat mode) 2 minutes