Sometimes, if your exposure time is chosen to be short or your color concentration is relatively high you will need to post-cure the finished object. You can do this quite easily and effectively exposing it to the sunlight or to fluorescent light. Tungsten Halogen works as well, but the best results are achieved if the curing light has some part of UV spectrum.
Sunlight or “Black Light” fluorescent lamps are quite effective and finish curing the object in minutes. UV light is also used to reduce the tackiness feel of the surfaces.