Detailed answer

To prevent hyperpigmentation during outdoor sports events or tournaments, it is essential to apply broad-spectrum sunscreen with at least SPF 30 before going outside. Reapply every two hours and after sweating excessively. Additionally, wearing protective clothing like hats, sunglasses, and long sleeves can provide an extra layer of defense against harmful UV rays. Seek shade whenever possible, especially during peak sun hours between 10 am and 4 pm. Lastly, consider using a topical antioxidant serum with vitamins C and E to further protect the skin from environmental damage.