They say ~ A waterproof formula with added Aloe Vera stays on for up to 8 hours. Depending on the alkali level of your lips, determines just how pale or rich the colour will go.
I say ~ Well not exactly a traditional lipstick in that it is bright green! When I saw this I just had to buy it, I had one when I was about 11 and really liked the pink colour it gave my lips back then. And now? Well its equally as nice as I remember! I doubt it was a Barry M one I had in those days but this one is lovely. You can use it as a lip stain which is great and very long lasting, when applied as a typical lipstick it is quite long lasting as well and doesn't feel dry.
Ultimately I really like this, its nice and quirky!