He only wears the makeup to tone down the feathers, pom poms and glitter..
I think you've confused him with Porl! Honestly, Robert looked like a tax inspector compared to what was going on either side of him last time Pearl was in the band!
No, he absolutely doesn't have to wear the make up. The look is not important. What really counts is in one's heart and mind. They make people really beautiful and attractive. From the point of view of a fan in Rob's case it's his music and lyrics. All the rest is just a show. Nice but not necessary. (However, I understand he wants to hide behind the tons of make up...)
But I don't see And I don't feel But tightly hold up silently My hands before my fading eyes And in my eyes Your smile
I mistook stars reflected in a pond at night for those in the sky.