Does sun exposure cause hair loss?

Exposure to sunlight itself usually does not directly cause hair loss, but prolonged exposure to intense sunlight—especially without proper protection—can have several negative effects on hair. Ultraviolet (UV) radiation from the sun can damage the outer protective layer of hair, making it dry, brittle, and more prone to premature aging. Additionally, UV rays may irritate the scalp, leading to imbalanced sebum production, which indirectly affects hair health. Hair loss is typically the result of multiple factors acting together, such as genetics, hormonal changes, poor nutrition, and psychological stress. Although sun exposure is not a direct cause of hair loss, to protect hair health, it's advisable to take appropriate protective measures when outdoors, such as wearing a hat or using a UV-protective hair spray, to minimize UV damage to both hair and scalp.