system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are my mustache hairs straight, but my beard hairs look like pubes?

[EDIT] TIL that I should be using beard oil and conditioner.
gpt
What you do to your hair does not affect the shape with which it comes out of your skin. The shape of your pubic hair is not determined by the amount of sweat or oils on your skin. The shape of hair is determined by the kind of hair it is (vellus versus terminal) and your genetic predisposition to what kind of hair you grow where (curly, straight, and everything in between). You grow one type of hair on your head, another on your eyebrows, another on your moustache, sideburns, beard, legs etc. If you look closely, there are differences in the hair you grow on different parts of your body. It's genetics that gave you a bushy beard and straighter moustache hairs. That's kind of all it is. Someone else could hopefully better explain the reason the upper lip might develop straighter hair than the face from a biological standpoint.