Hair is actually very much not the same from person to person, let alone race to race.

i mean obviously, but don't forget that we also literally evolved without the existence of shampoo and conditioner, and showers. So we're probably fine without it.

this statement alone is generic (and thus problematic when you try and apply it to all humans). What does regularly mean here? Every day? Every few days? Does this arbitrary regularity match a black person with curly hair vs a white person with straight hair? etc.

I don't know, how often do you shower? Most people shower daily, some people shower less frequently than that, very few people shower more infrequently than that outside of just having bad hygiene, unless we're not counting baths for some reason.

There's a reason it's a generic statement, i can't prescribe my highly irregular and variable shower schedule to the average person as it's probably not socially acceptable, but i also don't go outside, so.

I feel like most people can sort of like... Figure it out themselves? Seems like a reasonable assumption to me when it comes to personal hygiene.

It’s almost like a one-size-fits-all when it comes to health isn’t a great idea

yeah... That's why i said go try it?