Why do my armpit hairs grow so long?

Why do my armpit hairs grow so long?

Aprocrine glands have an abundance of hair follicles, which is why underarm hair can grow so thick.

Is it better to have long armpit hair?

Not shaving reduces skin-on-skin contact friction, which means when you do activities that involve arm movement, like running or walking, your skin is much less likely to get irritated by the friction. This might lead to fewer skin issues like rashes and ingrown hairs.

How long is too long for armpit hair?

If you leave it too long, the people who are lucky enough to get a good view of your bare underarms won’t notice you trimmed it, so what’s the point? Most armpit hair usually only grows to be two to three inches long, so an inch and a half should do the trick.