The ring light does give your pictures a strange set of shadows I quite like.
A ring flash is a flash gun that fits around the lens of your camera. It is noted for taking photographs that contain no shadows (since the light source is around the lens) and being very expensive.
A ring light on the other hand is a ring of LED lights which fit around the lens and is much cheaper than a flash. It is a steady light, which means you can use it for movies as well as stills. The major disadvantage is that it is not as bright as a flash. As far as I’m concerned this is not a huge problem, since I really want to use the light for close ups.
If you want something for your SLR that will give your pictures a bit of extra pop, and is great for portraits (no shadows means no wrinkles) then I’d recommend that you take a look.