What type of external product should patients avoid during external radiation?

Patients undergoing external radiation should avoid products with zinc oxide because these can interfere with the radiation treatment process. Zinc oxide has a physical blocking action that can inhibit the effectiveness of the radiation therapy by creating a barrier on the skin. The goal of radiation therapy is to target cancerous cells without shielding them from the radiation, and zinc oxide can counteract this objective.

Other products such as moisturizing creams, natural oils, and Vaseline may be used cautiously, as they can help alleviate the dryness or irritation that might occur during treatment. However, it is essential for patients to consult their healthcare provider about which specific products are safe and beneficial for their situation to avoid any irritation or adverse reactions.