The actor himself spoke about this in an interview with Collider. According to him, on the first day of filming in Los Angeles, applying makeup took six to eight hours, over which ten or fifteen people soared. Then Colin and the team decided that this whole masterpiece on the face should be properly run in, so the actor just went outside.
I went to Starbucks and ordered a non-Oswald drink, oat milk with two stevia sweeteners. I caught a couple of surprised gazes, but only because I looked so imposing, Farrell concluded.