Roll on kajal: It is easy to apply and doesn't need to be sharpened.
Kajal pencil: This one needs to be sharpened. It is easy to carry. Since it melts easily, store them in fridge.
Gel based kajal: It contains water and stays for longer. The catch is that you need to apply it with a help of a brush.
Kajal crayon: You just need to peel off the paper wrapper and apply it. The disadvantage of this kajal is that thin lines can't be drawn as it is not pointed. Besides, it is oil based so it melts during summer season.
Powder surma: If you buy a good quality surma, it will be good for eyes. But it can get messy! So carrying it in the purse, is not the best idea.
