The skin is the outer covering of the human body and is the largest organ. In a newborn it has an area of 2,500 cm2, but as it grows the area increases to 18,000 cm2 in an adult. In the newborn, the skin accounts for 13% of its weight compared to adults where it accounts for 3%. This is what gives the skin its special meaning as an organ in babies. The skin is the first barrier in the newborn who encounters the various powerful environmental factors to which the newborn was exposed as soon as he emerged from the safe intrauterine environment of the mother.