Ok, firstly the title of the post is a little misleading… You can’t really start a fire with just a chapstick, but if you have some kind of ignition source such as a firesteel or matches, a chapstick can dramatically increase your chances of getting a fire going in even the worst conditions.
Loads of folks have a Chapstick (or similar brand) in their pocket, even some of you guys (I know I do!). This is a great technique for those not so practised in starting fires in the wilderness or those caught out in a survival situation, unprepared in terrible conditions.
In the video they use the Chapstick with cotton balls, but you can use it with any other good tinder material. If you have nothing else, cotton from a t-shirt or jumper works well, just make sure you work the Chapstick into the cotton as shown in the video.