A simple cleaning is needed after using the delay spray. Delay spray is generally a local anesthetic on the surface of the skin mucous membranes, the main ingredient is lidocaine, which can make the local skin less sensitive, prolong the time of sex, and help to improve the symptoms of premature ejaculation, but the effectiveness of the delay spray is not 100%, and some men do not have a significant effect of using the delay spray. The delay spray needs to be used before intercourse, using the spray at the head of the penis and the coronal groove. When you are ready to enter the vagina, wash the glans briefly with warm water to prevent too much local anesthetic from remaining in the glans, which can paralyze the female vagina and affect the sexual experience. Delay spray should not be used for a long period of time, if used for a long period of time or used regularly with poor erectile function itself, it may lead to a loss of penile sensitivity, which can lead to erectile dysfunction. And some male delay spray may cause allergic reactions. Men should use the spray under the guidance of a doctor to avoid adverse reactions.