Hi, I Just Wanted To Know, If I Inject Into

Hi,

I just wanted to know, if I inject into my elbow IV, how long until the skin heals over the injection site. Meaning I want to go to the beach 30 minutes after vein IV, do i have to worry about the site of the injection still basically being an open wound/skin not healed. Or does the skin heal basically within a few minutes over thee injection site