Try researching iodine or iodide and acne. It has nothing to do with pushing bromine out. The excess iodine is excrete through the pores where it irritates the pores leading to the acne.
Here is some evidence. Bromination of foods and its use in plastics is fairly recent right? Yet in this article from 1912 they show a case of localized acne from the application of iodine:
As further evidence how do the people who claim the intake of iodine causes acne through bromine displacement explain this simple fact? Both chlorine and fluorine are also halogens and also displace bromine in elevated levels. So why don't people break out from drinking tap water? Or swimming in pools or showering? Why don't they break out from ingesting foods processed with fluoridated water? Or from drinking tea which is loaded with fluoride? For that matter why don't people who use spas have major acne outbreaks as spas are brominated?
And before anyone jumps on me again with a debate over this I am not denying that bromine can cause acne. What I am questioning is whether displacement of bromine by iodine causes acne. If they want to keep up with this claim then simply show me PROOF. I am not talking about someone's opinion site like Mercola. I mean show me studies PROVING this. I want to know where this claim is coming from and what EVIDENCE did the person making this claim use to come to this conclusion. If they are so adamant that the acne is coming from bromine displacement there should be studies somewhere verifying this fact. Otherwise what they are claiming is not fact but merely opinion being incorrectly claimed as fact.
And why they are at it I would still like to see their explanation of why the absorption or ingestion of other halogens are not also producing bromine acne.