Pjur Superhero Concentrated Delay Serum, Reduces sensitivity and not the sensation! The gel enhances the smoothness and provides a desensitizing film around the penis to reduce sensitivity without any numbing effect. It is suited for daily application. Apply the serum completely on the glans (end of penis) before sex, gently dab off (do not rub off), after few seconds so as to prevent your partner from experiencing any adverse effects.