I originally bought this is because I wanted to get a GWP, but I'm glad I got it now. It's the perfect size to carry around in my handbag for easy, no mess touch ups. I have Pink Touch, which is a very sheer, pale pink. The polish dries very quickly, within a few minutes, and lasts for around a week before it needs to be removed.
YSL says: A clever pen brush, incredibly simple to use, to varnish the nails anywhere, anytime and very quickly! In a single click, the nails are adorned with a veil of pearly shine or glossy colour.
Ingredients: butyl acetate, ethyl acetate, nitrocellulose, isopropyl alcohol, tosylamide/epoxyresin, acetyl triethyl citrate, acrylates copolymer, stearalkonium hectorite, benzophenone-3, acetyl tributyl citrate, alumina, polyethylene terephtalate, c9-15 fluoroalcohol phosphates, dimethicone, barium sulfate.