Red bottom, i.e. diaper dermatitis, should not be treated with scented oils. Diaper dermatitis is caused by long time contact with urine and secretions of infants and young children damaging the skin barrier. When diaper dermatitis, the skin is very sensitive, and fragrance oil contains some plant proteins, may lead to skin allergy symptoms, if the patient’s diaper dermatitis symptoms are serious, there are erosion, oozing and other manifestations, if the application of unsterilized fragrance oil, there is a possibility of infection with bacteria or viruses, so that the symptoms further aggravated, so red buttocks is best not to use fragrance oil coating. When diaper dermatitis occurs, we should strengthen the care, keep the buttocks skin dry and clean, wash the buttocks with warm water after each bowel movement, and can follow the doctor’s instructions to properly apply the buttock cream containing petroleum jelly or zinc oxide, to isolate the stimulation of the skin by urine and feces, and if the patient’s symptoms are serious, he or she should go to the hospital in time to consult the doctor for treatment and follow the doctor’s instructions to use the medication.