Which type of hair is classified as vellus hair?

Vellus hair is characterized as thin, fine hair that is typically soft and lightly pigmented. It is often found covering large areas of the body, such as the arms, legs, and face, and is sometimes referred to as "peach fuzz." This type of hair serves to help regulate body temperature and provides a slight protective function for the skin.

The other types of hair mentioned—thick, coarse hair, curly hair, and short, stubbly hair—do not fit the definition of vellus hair. Thick, coarse hair is often more noticeable and serves a different purpose in terms of insulation and protection. Curly hair is defined by its curl pattern rather than its fine texture, and short, stubbly hair typically refers to hair texture that is different in density and growth stage. This distinction reinforces the unique characteristics that define vellus hair among the various hair types.