Sephora claims "This must-have lip stain delivers intense color with no sticky residue. It provides buildable coverage for a natural, sophisticated, or glamorous look. The weightless formula leaves lips stained, soft, hydrated, and refreshed upon application."
The set came with a mini of Red Essence #10 and full size Fuchsia Concentrate #05 and the back claimed they are good for 6 months after opening. I would question that as well as their shelf life unopened since I owned them for all of a week before I tested them on my lips. They smelled like paint but they didn't last like a long-wearing lipstain might (where you might accept the horrible smell because of the amazing lasting power, for instance). Each color applied and became patchy under an hour of wear; even when a light layer of product was used, even with the claim that they are buildable.
Some of the reviews on Sephora indicate that these have a nice smell and last for ages, so as I said, it's possible I bought an old and/or bad batch, but what I would recommend is if you try these, make sure you stay away from those on sale and try to buy recent stock if you can. I wound up returning mine.
I would definitely recommend the L'Oreal one I tried over these.