Detailed answer

Using a sunscreen with high SPF and broad-spectrum protection can help protect against skin dullness. High SPF provides protection against harmful UVB rays that can cause sunburn, which in turn can lead to dull, flaky skin. Broad-spectrum protection shields the skin from both UVB and UVA rays. UVA rays can penetrate the skin deeply and contribute to skin dullness, wrinkles, and other signs of aging. By using a sunscreen with high SPF and broad-spectrum protection, you can minimize the damage caused by UV rays and maintain a brighter, more radiant complexion.