Originally Posted by Self_X_tacy
Why does the labia get so irrirated when you keep masturbating after you are no longer wet?
For just that reason.
The skin is quite thin, so it gets irritated easier and when you're wet, it reduces the friction that your movements have created.
Think of it like constantly rubbing your lips [face] with your hands - the friction heats the skin and it gets irritated.
Maybe you could try using lube [or a water-based lotion]* while masturbating?
*Be careful, as some lotions can upset the pH balance in your feminine area.