Common sense tells us that babies have sensitive skin that can be damaged easily. This is especially true when it comes to the sun. Babies are not born with a developed skin protection system, so they burn more easily .
Babies have more sensitive skin because the outermost layer of their skin is thinner.
A young child has more skin, relative to his body mass, than an adult, so a sunburn would be more serious. A baby can't tell you she's too hot or the sun's too bright. Your baby may begin to cry and you won't know whether she's tired, hungry or hot. Babies can't physically move themselves out of the sunlight. Ways to protect baby's skin Keep babies under one year out of direct sunlight to prevent skin damage and dehydration.