That is called college now.Mass insanity?
While modern permanent hair dye is relatively new, humans have been using dyes for millennia. Maybe a cultural norm of using non-permanent hair dye on special occasions? Powder wigs were once an integral part of formal attire, perhaps instead of completely ditching wigs worn to formal events it's replaced by the still less onerous custom of dying one's hair for special events. And by the time permanent hair dye comes around, it's not seen as unprofessional but the opposite- like wearing a tie to Walmart. Less of an uphill clump to get acceptance from there IMO
2019. It's all the rage in New Tokyo.Awesome.
Society with anime hair when?
If you want to force such high compliance, just add in deep human racism....be a set shade or......(other options depending on your crazy state ideology are available)The goal of the scenario is to have at least half of population have dyed hair by modern day.
It's not a non-standard color, but in Muslim societies a lot of men dye their beards red. Black dye is prohibited, but it is permissible to dye one's hair in any other color (with covering up grey hairs being a major goal). The reason that red is popular is because Muhammad is supposed to have dyed his hair red (although accounts differ on whether or not that's true). However there is a rule that dying hair cannot be done in imitation of non-Muslims or women.
That means a good POD would be Muhammad dying his hair a non-standard color. The biggest difficulty with that is getting a dye that can make non-standard colors. Part of the reason that colors like purple were so highly sought after is because it was difficult/expensive to get the materials to make that color, and being in a relative backwater limits the range of options that would be available to Muhammad. However if you can overcome that then whatever color Muhammad used would be popular in the Muslim world.
That is interesting, how common is this prohibition on dying hair black? Also what is the reason for it?
It comes from several hadith, and evidently one reason is because it deceives others on the age of a person who dyes their hair black.