How Does Sun Exposure Affect Melasma?
Sun exposure is one of the primary factors that can worsen melasma. Ultraviolet (UV) rays stimulate the skin’s melanocytes, the cells responsible for producing melanin, leading to increased pigmentation. For individuals with melasma, the skin's response to UV rays is heightened, causing dark patches to become more pronounced. Sunlight exacerbates existing melasma by intensifying the overproduction of melanin, making the spots darker and more noticeable. The sun’s rays, particularly UVA rays, penetrate deeper into the skin and trigger this pigmentation response, making sun protection an essential component of managing melasma.
The risk of melasma worsening with sun exposure emphasizes the importance of using sunscreen daily, even on cloudy days or during the winter months. Broad-spectrum sunscreen with SPF 30 or higher is crucial for shielding the skin from harmful UV rays. Additionally, wearing protective clothing like hats, sunglasses, and seeking shade during peak sunlight hours can further prevent melasma flare-ups. It is important to note that melasma can persist or worsen without adequate sun protection, even after successful treatments, reinforcing the need for diligent skincare habits to control the condition over time.
