Beyond the very basics of cleansing and moisturizing your skin, sunscreen is the single most important skincare product you can use daily. It’s also the most powerful tool for anyone looking to manage the aging process of their skin. Whether it’s sunny or cloudy, winter or summer, protecting your skin from harmful UV rays helps prevent premature aging, hyperpigmentation, and skin cancer. But not all sunscreens are created equal—so let’s break it down.