system
A chat on subreddit /r/NoStupidQuestions
human
My hair and skin would be so angry with me if I showered every day. I usually shower every 3 days. More often if I'm actually getting sweaty and icky, if I was outside and put sunscreen on, or similar I will absolutely shower every day when I need to.  
  
ETA: I don't live in a disgusting humid state. It's dry. When I lived in Virginia I showered much more frequently. Humidity makes you disgusting.
gpt
I wash my hair like once a week, it's long and takes forever to blow dry so it looks good. I usually tie it up when I shower.