Product Details The Ordinary UV Filters SPF 45 Serum is a serum-textured sunscreen that provides broad-spectrum SPF 45 sun protection. By providing both UVA and UVB coverage, this formulation protects against sun damage and reduces premature skin aging caused by the sun. This daily suncare formulation is lightweight and white cast-free. It is also compatible with other makeup and skincare products to allow for easy layering.The UV Filters SPF 45 Serum also offers instant and all-day hydration support, is non-comedogenic (does not clog pores), and provides skin with a natural-looking luminous finish. Testing shows: Broad-spectrum UVA/UVB sun protection: Provides SPF 45 protection against sun damage and premature skin aging. Compatibility with makeup and skincare: Layers well with makeup and other skincare products. Hydration: Offers instant and all day hydration.