Yes, he does reflect his heat vision but it's not a glass mirror. It's a piece of highly polished metal from the ship that carried him here from Krypton. I've seen it at least twice. As far as red kryptonite goes, I only know of one time that it made his hair grow at an inordinate rate and that was 40 years ago. (Does red kryptonite even exist in the currten DC universe?) Supergirl and Krypto came to the rescue, since it was too much growth for his standard method. Another question is: How does Tarzan shave? In the original novel, he shaved with his father's hunting knife, but how did he keep it sharp? And what did he strop it on, lion tail?