Interesting thread.
Throughout a typical year, I can go from using some of the heaviest balms (Cade, for instance) to nothing at all.
I have what is classified as combination skin, where the the centre of the face is quite oily, and as you work your way outwards towards the ears it is much drier.
This can cause an issue, as I like too keep the outer areas moisturised and non-flakey, but this can make the centre, or T-zone too oily.
Also, the whole winter/summer thing comes into play. I can get away without a balm in the summer, but in winter, as the cold sucks all the moisture out of the air and the central heating comes on, I need something to stop my face feeling tight and dry.
I never really have any irritation issues, it's all down to my skin being moisturised enough so my skin is slack enough to allow me to smile.
Ian