Hard-anodized pans are a type of cookware made with aluminum that has been electrochemically treated and coated in an oxide layer. This process makes the metal much harder than regular aluminum, so it is more resistant to scratches and wear. However, many questions have been raised about their safety when scratched. Although hard-anodized pans are considered safe for cooking, there is still some concern about the potential release of toxic substances if they become scratched or damaged over time. In general, the chance of exposure to any hazardous materials from these pans is very low as long as they remain intact and undamaged. If you do choose to purchase a hard-anodized pan, be sure to inspect it regularly for signs of damage or scratching which could potentially lead to contamination by harmful chemicals if left unchecked. Additionally, avoid using abrasive cleaning tools on your hard-anodized cookware; use gentle detergents instead and hand wash them whenever possible for maximum safety.