What type of sunscreen is best for protecting against both UVA and UVB rays?

The best choice for protecting against both UVA and UVB rays is broad-spectrum sunscreen. Broad-spectrum formulations are specifically designed to provide comprehensive protection against the full spectrum of ultraviolet radiation. UVA rays can penetrate the skin more deeply and are associated with aging and long-term skin damage, while UVB rays primarily affect the outer skin layers and are the main cause of sunburn. Therefore, using broad-spectrum sunscreen ensures that the skin is safeguarded from both types of harmful rays, significantly reducing the risk of skin damage, premature aging, and skin cancer.

Waterproof sunscreen, while beneficial for water exposure and perspiration resistance, does not guarantee extensive protection against both types of rays; it focuses more on durability rather than the spectrum of UV protection. Physical sunscreen, which often contains active mineral ingredients like zinc oxide or titanium dioxide, provides good protection against UV rays but may not always be labeled as broad-spectrum or offer the same comprehensive shield against both UVA and UVB. Moisturizing sunscreen may offer hydration along with some sun protection, but unless it specifically states that it is broad-spectrum, it might not provide adequate defense against both ray types.