Answer:
Lanugo is the hair that covers the body of some newborns. This downy, unpigmented hair is the first type of hair that grows from hair follicles. It can be found everywhere on a baby's body, except on the palms, lips, and soles of the feet. Most fetuses develop lanugo around the fourth or fifth month of pregnancy.
Lanugo is a type of fine hair that grows on the bodies of human fetuses while they are developing in the womb. These hairs disappear either by birth or shortly after when vellus hairs replace them. Vellus hairs are also naturally fine and transparent, but thicker than lanugo hairs.
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