This reminds me of a grown-up high-tech version of those old-school "mood" lipsticks that are whatever color in the tube (blue, green, yellow etc.) that supposedly turn into your perfect pink/red/whatever lipcolor as if by magic! This gloss does that too and looks a lot better in the process, all magic aside :) I waited until this week's $6 off everything PF sale at CVS so I picked this up for less than $4. NO way was I shelling out $9.99 on this just to satisfy my curiosity.
I knew the pink ones would both no doubt turn neon fuschia on me, so I opted for the Natural shade. It looks like a sheer peachy/coppery/pinky shade with light micro-shimmer in the tube but morphs into a warm, light to medium toned red gloss that leaves behind a red tint (lighter or darker, depending on how much you glop on, PH balanced or not. I think this is the key: how much you put on, the color of your lips normally, and the temperature of your skin). The Natural is actually quite flattering, surprisingly enough. It's not too bright nor is it fuschia like most of these (and their "mood changing" cousins) tended to be. As a gloss it's thick and long lasting, but not overly tacky-feeling on the lips. I can't discern a noticable smell or taste. The brush surprised me. I thought at first I got a bum or used one as the bristles are really short, like half the size of a normal lipbrush. They do the job, though.
The click-button switch to turn on the light is in the end of the wand, and it's a lot brighter than I expected, I figure if I ever lose my keys at night or in my Black Hole of a handbag, I'm set as long as this is with me. The mirror on the side of the tube is a nice touch and large enough to be useful, actually. I can't say I'd repurchase this because I think the "ooooh ahhhh" newness factor lasts all of five minutes. After that it's just a sheer warm peachy- red gloss (bear with me here, it's hard to describe and may be different on you) which leaves behind a nice clean warm red stain and doesn't dry out my lips. IMHO it's not worth the normal retail price but for less than five bucks it is a lot better than other gloss-to-lipstains (and just plain lipstains, for that matter) that I've tried. It's a fun and interesting little gizmo which works as well as one would expect but it's certainly not necessary. I'd go for the Natural color over either the two pinks anyday, especially if like me you are at all warm, tan or yellow-undertoned, as the Natural stays on the warm side of spectrum rather than veering off into the dreaded bright fuschialand cool side of the red spectrum. It's not the kind of color-change where your lips enter the room before you do :)