OBJECTIVES: I. Compare the efficacy of prophylactic Biafine cream vs standard best supportive care in reducing grade 2 or higher radiation-induced skin toxicity observed during radiotherapy in patients with advanced squamous cell carcinoma of the head and neck. II. Determine if prophylactic or interventional use of Biafine cream is more effective based on a reduction in maximum skin toxicity resulting from radiation treatment in this patient population. III. Compare quality of life of these patients with this treatment. IV. Assess the toxicity of Biafine cream in these patients.