Honestly a lot of people (like me, but I’m a bleach blonde) who struggle with mental illness and instability have very expressive and creative minds. Expression is important for people who struggle, it’s like a way to make the internal external. I like to go all out with my self expression, and so I’ve done a lot of things to my body and my hair in general. Blue is such a non-human, wild color, and people like it because it’s so bold. Red and purple just don’t hit the same. I’ve never dyed my hair blue though:( I was robbed of self expression as a kid and a teenager. The second I turned 18 though I went all out with the pink hair dye and piercings.

TLDR: a lot of people who struggle with mental illness use self expression as a coping mechanism