Nothing is harder on germs or easier on hand for Purell. This formula kills more than 99.99% of most common germs and outperforms other hand sanitizers ounce-for-ounce. Purell includes a nourishing blend of four skin conditioners which are clinically proven to help maintain skin health. Green Certified Instant Hand Sanitizer contains ingredients made from natural renewable resources. This product is green certified and meets the EcoLogo® hand sanitizer standard for environmental leadership and proven performance.