How the cream acts? Sudocrem is prepared on a base with water-repellent properties, which forms a protective barrier, thereby helping to stop any irritants (urine and faeces). In addition, the emollient effect can help soothe irritated skin, while leaving a soft feeling. Sudocrem can ease the pain and irritation of nappy rash, whilst other ingredients can help to heal the skin. Sudocrem can be applied at every diaper change. Remember, however, only apply a thin layer of cream, because a small amount of Sudocrem can spread too. The general rule is to use a small amount and apply in a thin layer. Massage in small circular movements until the Sudocrem is disappeared leaving a translucent film. If the affected area is not covered, apply a little more cream. However, if the area remains white after application, it has been applied too much.