[He won't directly acknowledge whether or not he applies makeup. As far as he's concerned, his appearance is completely 100 percent natural! He still doesn't look quite pleased with her answer, regardless of his never being pleased with Junko's existence in general. He might not have even noticed the freckles if she wasn't also acting so unlike what he's come to know of her over time.]

I... have no need for such insipid things as mankind's skin concealment treatments... [He mutters in an attempt to excuse himself.]

So that's it? You've merely had those freckles all along? And today just happens to be the one day that you've let your skin's guard down. Hmph. [He sounds skeptical, but also doesn't have a clear objection to raise.]