What is the Difference Between Terminal Hair and Vellus Hair?

Terminal hair and vellus hair are two different types of hair that grow on the human body. The main differences between them are:

1. Texture and appearance: Vellus hair is lightly pigmented, fine, and short, often referred to as "peach fuzz". Terminal hair is coarse, thick, and usually longer and darker than vellus hair.
2. Location: Vellus hair is found on the face, arms, stomach, and legs. Terminal hair is found on the scalp, underarms, and pubic area. In men, terminal hair is also found on the face.
3. Development: Vellus hair is the first type of hair to grow on the body during childhood. During puberty, some vellus hair turns into terminal hair due to the influence of hormones.
4. Function: Terminal hair has various functions, such as controlling body temperature and protecting the body from the sun. Vellus hair also helps with regulating body temperature and evaporating sweat.

In summary, terminal hair is darker, thicker, and longer than vellus hair, and it serves different functions on the body. During puberty, some vellus hair is replaced by terminal hair in various areas of the body.

Comparative Table: Terminal Hair vs Vellus Hair

Here is a table comparing terminal hair and vellus hair:

Terminal hair is the darker, thicker hair that covers the body and has various functions, such as protection, temperature regulation, and camouflage. In contrast, vellus hair is the finer, lighter hair that grows all over the body and helps to regulate body heat. Terminal hair is typically longer and darker than vellus hair, and it extends deeper into the skin.