Glow in the dark pigment does react under black light; it’s true. But UV reactive pigment (to simplify: “black light” pigment) doesn’t glow in the dark.
Glowing pigment aborbs and retains light—which is why it “glows” after the light source is removed. Black light pigment absorbs and reflects light as long as the UV light source is present, but returns to normal after it’s removed.
Read more about UV and Glowing Pigments
