Stress can negatively affect skin health in several ways. When someone is stressed, their body releases stress hormones like cortisol, which can lead to increased oil production in the skin, resulting in acne breakouts. Stress can also weaken the skin's barrier function, making it more prone to irritation and inflammation. Additionally, stress can impair the skin's ability to repair and regenerate, leading to a dull complexion and premature aging. It is important to manage stress through relaxation techniques, exercise, and a healthy lifestyle to maintain good skin health.