Inclusion Criteria:  Diagnosed with a rhabdomyosarcoma or other sarcoma requiring RT 12 to 25 years of age Scheduled for a RT planning session (CT simulation) Have a scheduled RT start date within 1 to 2 weeks from the CT simulation Will be receiving doses of radiotherapy greater than at least 36 Gy Subjects may participate in other studies, including therapeutic trials. Ability to comply with at-home dilute Di-Dak-Sol compresses for final week of dilute Di-Dak-Sol compresses following radiation treatment. Ability to understand and/or the willingness of their parent or legally authorized representative to sign a written informed consent document.  Exclusion Criteria:  Patients who are pregnant, which may result in discontinuation of RT Presence of inflammatory skin lesions in the radiation field that could interfere with assessment