Detailed answer

Yes, it is necessary to avoid polluted urban environments if you have dehydrated skin. Polluted air in urban areas contains harmful pollutants such as particulate matter and toxins that can damage and dehydrate the skin. These pollutants can strip the skin of its natural oils and moisture, leading to further dehydration and skin problems. Additionally, polluted air can also increase oxidative stress on the skin, causing inflammation and weakening the skin's natural barrier function. To help maintain hydration and overall skin health, it is recommended to limit exposure to polluted urban environments, by staying indoors during high pollution periods, using air purifiers, and following a proper skincare routine that includes hydrating and protecting the skin.