Glow in the Dark NeeDoh gives groovy a whole new look! In the dark, this groovy glob gives off a green glow that fills your hands with a squish that will blow your mind and mellow you out. Glow in the Dark NeeDoh is filled with a non-toxic, dough-like compound that always returns to its original shape. NeeDoh is appropriate for anxious tendencies and helps promote focus, attention and centering.