Revlon lists its Sugar Sugar Lip Topping as a limited edition product, but it has been out for quite a long time now. I kept putting off trying it because it honestly seemed a bit silly to me, but I finally broke down and bought one in Sprinkled Pink.
The topping is interesting stuff. It really is just like shimmery colored sugar to put on over your gloss. I kind of liked the effect of it. It adds some texture and looks very unique. I would suggest it for a night out at the club. I think younger people would also particularly have fun with it.
My only real problem with the sugar topping was that it felt odd and I kept rubbing my lips together, which generally removed it pretty quick. It also will not last at all through a drink or food, so be prepared to reapply often. But hey! If you want to goof off and try something unique and fun, this is something that could be of interest.