Originally Posted by
PerfInit
Indirectly, yes, some types of Lip Balm may enhance combustion inside the O2 mask while 100% O2 setting. Also some types of "facial hair products" might not be good either. I believe there is an FAA Advisory Circular about this subject.
that's quite a stretch of you ask me... if lip balm is the problem then ban the lip balms not the beard.