The pjur superhero Delay Serum takes an entirely new approach to reducing sensitivity. It works by creating a neutral, invisible protective film over the penis that helps reduce sensitivity. In contrast, the pjur superhero Performance Spray contains special natural ingredients. Both products work without any numbing agents and take effect after just a few seconds. They provide a similar level of intensity and so it is entirely a matter of personal taste as to whether you choose the gel-like serum or the gently cooling spray.