Armpit hair does not discriminate between men and women, and although the thickness of armpit hair varies from person to person, the vast majority of people will grow armpit hair. Armpit hair is a common form of body hair, which gradually increases during and after puberty. The growth of armpit hair is generally related to the secretion of androgens. When androgens are secreted vigorously, armpit hair grows faster and denser. Generally speaking, women have less but not no androgen, so it is normal for women to grow armpit hair. A very small number of people do not have armpit hair, may be related to genetic factors or low levels of androgen, if the latter should pay attention to their own endocrine disorders and other problems. Armpit hair is not completely useless, it can help the body sweat, regulate body temperature, reduce skin friction, and can protect the surrounding skin tissue is not easy to damage. If you need to shave your armpit hair because it affects your image, you should be careful not to scratch the skin tissue to avoid infection, and do not easily use shaving creams and other chemicals that may irritate the skin, so you can go to a regular hospital and choose ice point hair removal.