Puberty usually starts when a young man is about 12 years old, so your development is right on schedule! Armpit hair is completely natural so it is a personal decision to “get rid of it.” Since most guys (and girls) have armpit hair, it may be more noticeable if you remove it. However, if it bothers you, you could always trim it rather than shave it. Shaving your armpit hair may cause irritation such as a rash and itchiness. You may feel less self-conscious about your underarm hair as your friends get some too.​