How to clean the Vital injector after use it

Use vital injector to inject hyaluronic acid, VC and other dosage. Stay effective anti-wrinkle and moisturing function.
There has dust in the gun after use the vital injection. we need to clean it every time after use.
Use the hot water around 70 - 80℃ put into the Negative pressure port.
The gun must do not contact the machine and let the waste get out from the gun and cable.
No mater one time you use or many times you use. must clean it like this.