For the people who are saying the bruise disappeared.
The bruise happened under his chin
We dont see under SeraJinbe's chin for the rest of the chap. We only see him from far away panels and dont see under his chin. So techincslly there id zero proof it went away. Why should when Oda drew it right lol.
Nothing is stopping the fact that nerfed Sanji bruised, white eyed and bloodied Serajinbe with DJ.