I have been using maybelline colossal kajal for almost half a year, off and on. It comes in a nice packaging and is easy to carry as well as easy to apply.
It stays for nearly 4-5 hours.
It does not irritate the eyes. I have got sensitive eyes and used to end up with huge tears after applying a kajal, irritating them and spoiling the entire look but that does not happen with this one.
It says it is smudge proof but sometimes it gets smudged, maybe due to my negligence as well. Overall, it is a product worth trying and see if it works for you.