Details about Z Block 25% Zinc Oxide Sunscreen Gel: Water-Resistant & Paraben-Free, SPF 50+ UVA/UVB Protection A cutting-edge sunscreen gel that provides defense against damaging UVB rays is Z Block 25% Zinc Oxide Sunscreen Gel UVB SPF 50+. Zinc oxide, a mineral-based substance with a high concentration of 25% that is well-known for its capacity to scatter and block UV light, is present in it. With its broad-spectrum protection, this sunscreen gel protects skin from UVA and UVB rays. It has a Sun Protection Factor (SPF) of 50+, indicating that it offers a high level of protection against UVB rays. Its PA+ rating, which denotes protection against UVA rays, is also mentioned. Zinc oxide, glycerine, ceprylyl methicone (and) PEG-12 Dimethicone/PPG-20 Crosspolymer are the main ingredients.