Let's say there's two identical twins. However, they don't have identical skin. One has a acne and the other doesn't. They both work at a shop as a cashier. Would it matter to you if you stand on the line with the person who has acne or not? Does facial or integument (skin) display of acne a factor for you when you choose your friends, boyfriend/girlfriend, service provider, etc.
For, it's not really a big deal. Lot's of people have it once in their life and I even have some as well.
@Question: I'd choose the shortest line. I don't care how the cashier looks like.
I'm actually not bothered about anyone's skin condition. I shouldn't complain either since my own isn't perfect either.