This is definitely a cool toy with that all important `wow' factor. It works best in complete darkness, but it also works to some extent with just the curtains drawn at day-time. The idea is very simple, yet genius! The toy consists of a plastic sheet with glow-in-the-dark properties and a light pen. You can then draw with the light on the glow-in-the-dark surface. There are also a number of accessories, like positive and negative stencils and some acetate transfer sheets as well, along with a star crystal attachment for the pen. Simply wave the light pen over the stencils and see the designs appear on the sheet. You can also draw you own designs or write on the surface, which is probably the most fun. The designs start fading almost immediately, but still remain visible for a couple of minutes. A perfect bed-time toy to share with your child, very magical!
The quality of the toy could be a bit better. The sheet scratches quite easily, though it doesn't seem to affect the performance. The light pen is very bright, so be careful not to shine it into your eyes. My husband thinks it might be UV light though I didn't find any reference to this on the packaging. It should be perfectly safe if used properly, but I wouldn't leave a young child alone with this toy. The pen takes 3 X AAA batteries and they should last for a good while. I looked for replacement lights in case the bulb goes in the light pen, but I couldn't find any. If that happens, it's probably the end of the toy, though you may be able to use it with a regular pen torch as well.
Overall, I'm quite happy with this toy. I would definitely recommend this toy, but do shop around to get a good deal.