I've always had a thing for illuminizers, going way, way back when you didn't hear that much about them. I was always trying to have a "dewy" look, I guess.
There weren't that many of those products available. I remember one in a stick form, by Revlon. I think it was called "glimmer lights" or something like that. I had a whitish liquid by Loreal, in a small bottle, and Ralph Lauren had a bronzer type illuminator in a small bottle. This is way back in the early or mid eighties. Now there are a gazillion of these products, and I hate to admit, I have most of them.
I just prefer a shinier look to my makeup. When it's all matte, I have always felt I looked older, even when I wasn't "older". I try to excercise control with all this shiny stuff, though, by reminding myself I don't want to end up looking like the Tin Man from Wizard of Oz.
I agree that a few of the vendors are SO glistening that they do actually look greasy. You can take the whole moisturizing thing too far, and I think on the whole we use way to many products. Way too much.