Weleda Baby Derma, 50 ml, For Nappy Rash For Kids, Weleda Baby Derma is an ideal helper in the fight against nappy rash. it prevents sores from occurring and forms a protective layer on your child’s skin. Characteristics: prevents nappy rash soothes irritated skin protects the skin against external influences How to use: Apply as needed in a thin layer to washed and dried skin, ideally after nappy changing.