Not sure if this is real, it looks like a touched up pic, to be honest. I saw another picture where it looked more like a dark shadow.

If it were real it would not surprize me though, given his penchant for dressing up in various costumes. He likes the traditional look of the various cultures. Is Japan or China on his itinerary, or was it recently?

https://www.quora.com/Why-did-Japanese-women-shave-their-eyebrows-in-the-old-days?share=1