Being an adult, over the age of 18 years old; Owning diagnosis of breast or head and neck cancer; Being first referred to the radiotherapy protocol; Presenting radiodermatitis grades 1 or 2, second RTOG score, in the place where is receiving radiation therapy; No history of previous hypersensitivity reaction to chamomile or any plant of the Asteraceae or Compositae family or Urea; Demonstrate understanding to continue the intervention in their home environment when necessary.