During radiation therapy, it's crucial to avoid skin care products that can irritate or further damage the skin. Products to avoid include: Perfumed lotions and creams: Fragrances can irritate sensitive skin. Alcohol-based products: These can dry out and irritate the skin. Deodorants containing metals (such as aluminum): These can interact negatively with radiation. Retinoids and alpha-hydroxy acids (AHAs): These ingredients are typically found in anti-aging products and can be too harsh on treated skin. Scrubs and exfoliants: These can exacerbate skin sensitivity and damage.