Why do we have underarm hair? Causes, benefits, and removal tips

Armpit hair growth is a perfectly natural part of growing up. While armpit hair can be functional and keeping or removing it remains a personal choice, many of us choose to remove underarm hair for various reasons. Whether you find smooth underarms more aesthetically pleasing or simply prefer the comfort of keeping your armpit hair intact, we’re here with all the facts.

In this article, we will explore everything you need to know about the causes, benefits, and how to get rid of underarm hair, including:

• The two factors contributing to underarm hair growth.
• Why do some individuals choose not to remove underarm hair?
• Are there any benefits of underarm hair removal?
• Tips and tricks for the best way to remove underarm hair. 

Are you ready? Read on to discover everything you never knew you needed to know about the best way to get rid of underarm hair and reasons why you might decide to keep it instead.

The two factors contributing to underarm hair growth

There are two main factors which contribute to the growth of underarm hair. So, why do we grow hair under our arms?

1.  Biological factors
   As we grow older, our bodies naturally change, and the same goes for the growth of underarm hair.¹ So, when we ponder the question “Why do we have underarm hair”, it can often be linked to the natural process of transitioning into adulthood.^2,3 
   
   
2.  Hormones
   As you know, we’re not medical experts in this field but it’s known that certain hormones, like androgens, can influence hair growth.4 Conditions such as polycystic ovary syndrome, also known as PCOS, are often linked to higher levels of these hormones which can contribute to increased hair growth. 

Why do some individuals choose not to remove underarm hair?

Now you know the answer to the question, “Why do we grow underarm hair”, you’re probably considering what to do about it. Whilst many look for the best way to get rid of underarm hair, some individuals choose to keep it. So, why do some people choose not to remove underarm hair?

• Body temperature 
  The hair on our bodies isn’t just for the looks! It actually helps us to stay warm in chilly weather and cool in the heat. So, if you choose to embrace your underarm hair, it’s not just a fashion statement – it could also help you manage your body temperature.⁵
  
• Skin protection
  Traditional hair removal methods such as shaving or waxing can sometimes cause discomfort and skin issues, such as cuts, razor burns, irritation, and ingrown hairs.
• Personal preference 
  While some individuals choose to remove underarm hair, many others prefer to keep it due to personal preference and comfort. Ultimately, it’s always a matter of personal choice! 
• Avoid dry skin
  Choosing not to remove underarm hair allows you to reduce friction and retain the natural oils produced by your skin. This can help to reduce the risk of your skin drying out.⁶

Benefits of choosing to remove underarm hair

Although you now have several benefits to keeping armpit hair, it is still a personal choice, and many choose to remove it. Before we share the best way to get rid of underarm hair, let’s explore the benefits of choosing to remove underarm hair.

1. Being hair-free means smooth, soft underarm skin.⁷
2. Removing underarm hair can help to reduce body odour.⁸
3. When you have less underarm hair, you sweat less.^{9, 10}
4. Choosing the right hair removal method can reduce the risk of ingrown hair, especially if you have curly or coarse hair.