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Why Does My Leg Hair Grow So Fast? (6 Major Reasons)

Why Does My Leg Hair Grow So Fast - woman having leg hair
woman having leg hair

Most people would agree that long leg and arm hair can be a pain, and for people with fast hair growth, the problem only worsens. Are you also among that population that faces the issue of rapid hair growth? Did you just shave your leg hair to enhance your beauty but they’re growing back in just a few days?

If yes, you may ask yourself why your leg hair grows so fast! Luckily, there are some common causes behind the issue which we want to bring to light. Are you here to know the reasons? Today is your lucky day!

Leg Hair; How Fast They Grow

someone shaving leg hair with a pink razor
someone shaving leg hair with a pink razor

Our knowledge of leg hair growth is limited; there isn’t much research on the topic. Yet, we have some general information from internet sources that leg hair grow around ½ inch every month. This isn’t much different from the hair growth on your head.

According to Medical News Today, hair typically grows between 0.5 and 1.7 cm per month on average. This corresponds to between 0.2 and 0.7 inches.

But then why doesn’t leg hair grow as long as our head hair? The cause behind that is the hair growth cycle. According to WebMD, leg hair has a shorter life cycle of 30 to 45 days compared to scalp hair which lasts for several months.

Why Does My Leg Hair Grow So Fast?

a girl shaving her leg with a razor
shaving leg hair with a razor

While leg hair growth on an average scale is ½ inch per month, some people note that their hair grows faster than this. If you also note that your hair grows faster, you may be interested in knowing about the condition’s underlying causes.

Genetics and medical factors play a central part in faster leg hair growth. Here are some of the factors causing rapid hair growth among some people.


According to Healthline, on average, a person’s genetic complexity supports 100,000 hair follies. But this number can vary, determining hair growth rates. The genetic composition determines your leg hair growth, and you can hardly do anything about it. Since there’s not much you can do with genetics, accepting it and finding ways to live with fast leg-hair growth is best.


Some people, by their heredity, are more likely to have excessive hair and faster hair growth. If you belong to Nothern European descent, you are at risk of excessive hair growth. Moreover, a heredity condition, Androgenic alopecia, also affects leg hair growth.

Hormonal Imbalance / PCOS

Unbalanced hormones can lead to excess body hair growth in women. The testosterone hormone is present in males and females. The increase in testosterone levels can significantly increase hair growth.

If you’re someone suffering from PCOS, you’re at a greater risk of faster leg hair growth because of hormonal imbalance. Polycystic ovary syndrome, or PCOS, results in greater testosterone production and hormonal imbalance. Both these factors, combined, result in quicker hair growth.

Your Age

Age is another factor contributing to fast hair growth. Putting genetics aside, age alone also affects hair growth in men and women. At a growing age, a person may have a faster hair growth rate, which is valid for the puberty age of both genders. Leg hair growth is more rapid, with higher androgen and estrogen levels during this period.


During pregnancy, the hair of the armpits and lower and upper legs tends to grow faster. In the reproductive and puberty years, you experience accelerated leg hair growth because of increased estrogen, the sex hormone.

According to Kids Health, during pregnancy, many women experience changes in their hair growth. The hair may grow more quickly due to the hormones. However, these hair changes are frequently temporary.

The situation, however, varies in this case. Some women feel that their hair growth on the legs is faster after pregnancy, probably because of a drop in estrogen levels. Yet, some women never complained about speedier hair growth during these years.

How Can I Reduce Hair Growth?

a girl having laser epilation on her legs
a girl having laser epilation on her legs

If you think your leg hair grows faster than usual, you can try different from removing them from time to time. These simple methods include:

If you want to stop leg hair growth entirely, you can use a laser hair removal treatment that lightly damages the follicle to stop hair growth.


Since you now know what causes faster hair growth, you can aim to find ways to cope with it. While you should be comfortable in your skin, who doesn’t want to enjoy a hair-free moment?

We hope the information above answers the questions you can search for. At the end of the day, we want you to be comfortable with who you really are!


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