Typical interior lighting and ambient light will not cause TotalBoat UV Cure Clear Resin to cure faster than the specified working time. However, working diligently is always encouraged to maximize the working time of the resin. UV Cure Clear Resin requires light in the 365-395nm bandwidth (blacklight) to cure. Once exposed to light in this range, the resin will instantly begin to cure. The rate of the cure is dependent on the depth of the resin, if any colorants have been added, and the intensity of the UV light source.