What is lanugo?

Lanugo refers to the fine, soft, downy hair that covers the body of a newborn infant. This hair is particularly noticeable on the shoulders, back, and sometimes the face. It serves a purpose in utero by helping to regulate body temperature and may facilitate the attachment of the vernix caseosa, a protective coating on the skin that helps prevent water loss. Typically, lanugo is shed shortly before or after birth, often being replaced by finer hair as the child develops. Understanding the characteristics and significance of lanugo is crucial for estheticians, especially when dealing with dermatological conditions or in the context of infant skin care.