What skin products should a patient receiving external radiotherapy avoid?

Patients undergoing external radiotherapy should avoid using ointments with metals because metallic substances can interact negatively with the radiation treatment. These metallic components can increase skin irritation or lead to adverse reactions, as they may conduct heat differently during radiation therapy. The use of metal-based products could compromise the skin's integrity and potentially lead to further complications in the treatment area.

While creams or lotions and moisturizers may be debated based on their specific composition, products containing metals are particularly problematic. Additionally, alcohol-containing moisturizers can dry out the skin, potentially exacerbating irritation, but they are not universally prohibited. The term "generic skincare products" is too vague, as it doesn't necessarily specify harmful ingredients either, making it less of a direct concern compared to products with metal content. Thus, avoiding ointments with metals remains the most critical guideline for skin care during external radiotherapy.