@Veshv
About the vial throwing, I agree with tack, I don't think it was intentional to reveal the peroxide to Kyara, it seemed more like he just panicked because he didn't want to drink the peroxide. Because since it hit Kyara, Kyara had evidence that there are 2 peroxide vials (since the man wouldn't choose peroxide intentionally), and had every right to purge him according to the rules which stated there would only be one peroxide vial.
Perhaps the opponent wanted to spill it without hitting anyone, and try to proclaim that it was just water and just hurry over to the next match and hope everyone buys it. But as tack said, even in that case Baku would've probably threatened to touch it and reveal the cheating anyhow.