there are many things about hazel's povs that have an intensely de-racialized vibe to them (read: divorced from the black girl experience) but I think any black person will tell you that the most obvious sign is the complete lack of attention paid to her hair
she's from the 1930s her hair was definitely getting permed and straightened (it was not acceptable to just wear your natural hair out back then. optics + cultural assimilation/you'll be hard pressed to find photos of black american girls with unstraightened hair in that time period unless they're from like..... harlem)
I do believe that marie was straightening it for her For A Time but then she became more neglectful and stopped so hazel had to do it herself. I'm almost positive that hazel wouldn't have even been permitted to set foot in her school building without straightening it because that's just how much of an expectation it was
ok she comes back from the dead. what's she doing to her hair now bc it's not just gonna be cutesy effortless curls falling over her shoulder no matter what the length is
how does she feel about living in a time period where natural black hair is more accepted (read: more, absolutely not fully)
there are no black people around her At All. in fact she's around a lot of white people on the argo (+nico) so that would probably be giving her some intense feelings of double consciousness (look this term up if you don't know what it means) and that would inform how she feels about her hair
theoretically she ought to be wearing her hair in braids for simplicity's sake but I think it's more likely that she would cling to what she knows (perming/straightening) because it's not easy for a 14 year old girl (PSA hazel is 14.5 in hoo not 13 btw 👍) to go from assimilating to deeply-ingrained white hair beauty standards to just proudly wearing a distinctly black hairstyle all by herself
mind you black women and girls can do whatever they want with their hair and straightening/perming it does not always/have to come from a place of self-hatred or whatever but in this particular case back then straightening one's hair was political And a survival tactic. it was as normal as brushing your teeth. it was enforced through dominant cultural messagings about the Absolute Necessity of conforming to white conventions of beauty. if you don't understand then think of it similarly to how you'd think of 1930s women needing to be perpetually dolled up and modestly dressed in order to be considered "good women" and anyways I'm just saying that this would be a lot to unpack for a 14 year old girl so hazel's probably just continuing to do this impractical thing (straightening her hair all the time) like 60% out of habit and 20% out of shame and 20% she doesn't know what else to do
something something about a missed potential character arc regarding all of this and in general there's so little mind paid to race in hazel's povs which is just ridiculous to me because a black girl from the jim crow era should have at least a few feelings about where she fits into modern society even if that society is camp jupiter. rick demonstrates his capacity to talk about how his characters feel about their race most notably in the kane chronicles so I don't think was too much to ask for. see this quote from an early son of neptune chapter:
^ like....... hazel's feelings of out-of-place-ness are There in the text and important to take note of when understanding her character (note that she's been there for like a year already and she still feels like she doesn't belong) but the emphasis is always put on her Being from a different time or Being undead and is never put on her out-of-place-ness regarding her race as a black girl from segregation times who is literally so out-of-place in this weird post-racial camp jupiter society. it feels like such an obvious thing to consider so its glaring absence really bugs me when I reread her povs and it bugs me when her hair is never talked about by extension because It Matters
you might be thinking "well she had a lot going on and she's not a superficial person maybe she just didn't care what was going on with her hair" and my response is simply that Black girls don't get to "not care" about their hair it is not the same thing as a white person going to school with bedhead it's not the same thing At All (if you aren't black then chances are you've never actually seen what untouched black hair looks like in the morning), especially when it's been beaten into your head for your entire life that your hair is ugly and you have to "do something to it" for it to be acceptable (and again...... she's from the 1930s so that feeling is magnified like 50x over). remember that perpetually dolled up modest 1930s woman I mentioned previously. picture her time traveling to camp jupiter of all places in 2010 and struggling to drop all of her makeup/hairstyling routines and internalized misogyny and conceptualizations of what women are "supposed" to be. this is the kind of fascinating character exploration that we really missed out on with hazel (and tbh regardless of her race she was never believably written as someone from the 1930s. I don't think rick even really tried to be honest)
you might also be wondering "how was rick supposed to know/attempt to portray any of that" and then my second answer is that If you're going to write a character who is not the same race as you then you should do some research and we have the internet now so research has never been easier 👍 this would be especially important to do if that person is a poc from the jim crow era I think! (he could have at least googled black hair 1930s)
anyways what I choose to believe (this is pure fanfiction) is that during hazel's first year at camp jupiter (remember that she was there for about a year before son started) nico would have helped her figure something out after observing her distress over her hair c: like they both secretly watched youtube videos on black hairstyles circa 2010 and then they got attacked by monsters for using a laptop (neither of them know how to use a laptop but he's trying his best for her) but then after killing them he helped her do her hair as something she likes that is easy to maintain <3 (I could also see reyna doing this because she surely knows a thing or two from her spa days)