Spraying and disinfection
This is a quick tip, which makes sense after some consideration.
Who of you was ever at the doctor for a syringe? As a rule, he takes a swab shortly before and smears disinfectant on the later puncture site. It's probably going to reassure some of you if he does that.
But now it comes. What do you think, how long such a disinfectant must act to work?
If the doctor immediately after the disinfectant syringe sets you, it was probably too short. On average, it's probably ten minutes that a disinfectant needs to be effective. So that's actually more of a psychological-calming effect.
If you want to play it safe, let it work for ten minutes.
Otherwise, however - that's why nothing will happen - you usually do not need to worry, because the natural acid mantle of the skin, say your body, protects you at the puncture.
But pay attention to it ... as a limping comparison: how long does detergent have to act or chlorine cleaner as described?
