A swollen face is common after dental treatment. Consider the following tips to reduce the swelling of the face -
Use a cold compress as it helps to reduce the swelling and inflammation.
Avoid processed and salty food before bed.
Wash your face with cold water after you wake up.
Don't sleep with your makeup on, as it can trigger inflammation
Avoid alcohol
Use cold cucumber juice on your face, as it has antioxidants that can help with swelling.