Diamond FX Neon Violet looks like a somewhat transparent medium purple under regular light and a glowing pinkish purple under black light. This color does not have the dayglo effect under regular light. This color is best just for black light use. I would recommend using DFX Essential Violet for regular use, since it is more opaque.
DFX has Neon Blue, Neon White and Neon Violet that only contains ingredients approved by the FDA to be use in cosmetics.