Does your kid's school actually have a strict dress code about this, or is that more of a general worry in your head?
I think the people saying "hair grows back" are kind of missing the real issue here - which is that you're probably anxious about how it'll affect your teen socially or academically, not that you think it's literally permanent damage. That's totally fair to think about. But here's the thing: at 15, most schools aren't actually going to care that much about hair color unless it's truly extreme or your school has explicit rules against it. And honestly, in 2026, bright hair colors are way more normalized than they used to be. Way more teens are doing this. So the "future consequences" worry might be bigger in your head than it would be in reality 😅
For a real compromise though, what about suggesting they try a semi-permanent color first? Those wash out in like 4-6 weeks, so if they hate it or if there's actual pushback from school (which would be unusual), it's not a months-long commitment. You could also do just the underneath layer or streaks instead of full head, which gives them the fun factor without it being as visible in formal settings. Or honestly, if they're determined and your school doesn't have rules against it, sometimes just letting them do the thing and have it be *their* choice means they feel heard. That matters more at that age than the actual hair color, if I'm being real with you.