ZO Skin Health Smart Tone Broad-Spectrum SPF 50 is a premium sunscreen that provides high-level UV protection while adapting to your skin tone. This 45ml product offers broad-spectrum protection against both UVA and UVB rays with its SPF 50 formula. As a personal care product focused on sun protection and skin health, this sunscreen is part of the ZO Skin Health line developed by Zein Obagi MD. The Smart Tone technology suggests it may help provide an even, natural-looking finish while protecting the skin. The broad-spectrum protection helps prevent sun damage, premature aging, and other UV-related skin concerns.