Final answer:
The product likely contained ingredients that caused an allergic or sensitivity reaction, leading to skin irritation. It's recommended to stop using the product and consult a dermatologist.
Step-by-step explanation:
If a man has a reaction to a product that left his skin dry, flaky, and irritated, the product was likely not suitable for his skin type or may contain harsh chemicals that triggered an allergic or sensitivity reaction. It's important to recognize signs of skin irritation and to discontinue use of the product immediately to prevent further damage.
One should consider visiting a dermatologist to address the issue and potentially get a patch test to determine the specific allergen or irritant. For future prevention, it is advisable to perform a patch test before using a new skincare product.