Which hair type is often fine and barely visible?

Vellus hair is characterized by its fine, short, and soft texture, making it often barely visible to the naked eye. This type of hair covers much of the human body, particularly in areas where terminal hair does not grow, such as the face and arms. Vellus hair plays a role in regulating body temperature and can sometimes be mistaken for peach fuzz due to its subtle appearance.

Terminal hair, on the other hand, is coarser, thicker, and usually pigmented, found in areas such as the scalp, underarms, and pubic region. Lanugo refers to the fine hair that covers a fetus in the womb and is usually shed before birth, whereas follicular hair is not a widely recognized term in dermatology and may create confusion as it is not typically classified within the standard hair types.