To make an injury or insult worse, like how salt hurts open wounds. Have you ever cut your anything and walked into the ocean?
to make a bad thing worse
The phrase "rubbing salt in his wounds" is not generally taken to imply you're doing him a favor.
If by salt rinse you mean saline solution, then yes. You can use saline solution on any open wound to clean it.
during the ealier centuries, when England WA developing their navy, most sailors where pressganged into service. while at sea, punishment was often lashes with a cat'o'nine tails. These whippings would usually break open the skin, and salt was rubbed into the wound to help stave of infection. Of course, rubbing salt into an open wound would sting like crazy. So in modern times, rubbing salt in your wound, generally means just adding more pain and suffering.
People did that because it helped stop the wound rotting. Now people talk about it because it stings mightily.
Salt the Wound was created in 2001.
Salt the Wound ended in 2010.
The duration of Salt in the Wound is 1.63 hours.
The term "Pouring salt in an open wound", means that you are causing hurt to something that already hurts. If your ex has hurt you and they keep hurting you and you want them to stop, then yes by all means tell them.
it means to make something more painfull
Salt in the Wound was created on 1969-08-10.
Pure salt would irritate the piercing (hence the phrase "to pour salt on a wound," meaning to make things worse); a relatively mild saline solution can be used to clean it.