Louisiana Esthetics State Board Practice Test

Lanugo hair is the correct term for the soft, fine hair that covers the body of a fetus and is typically present at birth. This type of hair is characterized by its lightweight, fluffy texture and is often shed shortly before or after delivery. Its primary function is thought to provide insulation and may help with the application of vernix caseosa, a protective coating that helps keep the skin hydrated in the womb.

In contrast, capilli refers to the hair on the scalp, primarily thicker strands, while vellus hair, which can be found on the majority of the human body, is fine but typically emerges after lanugo hair shedding. Terminal hair is the thicker, coarser hair that develops during puberty in areas like the scalp, underarms, and pubic regions. Understanding these distinctions helps clarify why lanugo hair is specifically recognized for its unique role and characteristics during fetal development and shortly after birth.