Broad spectrum sunscreen provides protection against both types of ultraviolet radiation that we are exposed to each day by providing a barrier that absorbs or reflects the UV radiation before it can damage the skin. Sunscreen products that are not broad spectrum or have an SPF of less than 15 must carry the following warning: Spending time in the sun increases your risk of skin cancer and early skin aging. This product has been shown only to help prevent sunburn, not skin cancer or early skin aging.