Haha, that's pretty funny, moreover I've found an other picture of his face and particularly of his lips which I cut off :
On this one we can see that his lips are kind of moisturized by maybe a cream which seems to be a bit oily.
Difficult to make suppositions about it lol.
Anyway, you said that nobody seems to care about. I agree, but just because he, if ever he had the same problem than us, just masks it by applying chemicals everyday like some of us guys were doing but stopped because we wanted to fix it, for good.