What does broad spectrum mean for sunscreen?

Broad spectrum sunscreen protects against both UVA and UVB rays. UVB rays cause sunburn and contribute to skin cancer, while UVA rays penetrate deeper and are primarily responsible for photoaging, dark spots, and also skin cancer. A sunscreen labeled broad spectrum has passed FDA testing confirming it blocks a meaningful portion of both UV types. Always choose a broad-spectrum formula for comprehensive skin protection.