Although a baby’s skin may appear smooth and perfect on the outside, Mustela’s researchers have clinically proven that a baby’s skin is still developing up until the age of 2. During this period of development, the skin is extremely fragile and is not able to fully protect itself from daily environmental conditions. Through analyzing the physiology of baby and child skin, Mustela’s research team has scientifically proven that there is not one, but many different types of baby skin: normal, dry, eczema-prone and very sensitive skin.