This product is the same as Smashboxes O-glow lip gloss but $6 instead of $22!
It is supposed to change colour on your lips and become a custom colour depending on your chemistry.
I found it did not change my lip colour too much...but the same goes for the smashbox version. I bought this and saw very little change, then tried the smashbox, and it did the same. I guess it is just my chemistry. It is a really good quality gloss, and cost so much less then the smashbox version.