This is the stomach-churning moment a massive zit on a man's face is popped.

Footage filmed on July 23 in Bac Lieu, Vietnam, shows the moment the spot is punctured causing pus to squirt, gush and leak out.

Dermatologist Phan Ho Hoa My captured the images and claims the patient suffers from severe acne.

It took a reported three months to remove the acne from the patient's face, the doctor added.