Zinke Stick purple SPF50+ by Key Sun, is a High Protection Zinc Sunscreen. It provides broad spectrum UVA/UVB protection, is water resistant for up to 4 hours.This sunscreen stick, also includes Vitamin E, an antioxidant and skin moisturiser as well as Aloe Vera for its skin conditioning and soothing properties.Using Key Sun Zinke SPF50 may help prevent some skin cancers and reduce the risk of some skin cancers caused by exposure to the sun's harsh rays.