Hello,
For such a blister, quickly rinse the area and apply an antiseptic such as neosporin. Also try to keep the lips mositurised by applying good lip balm or Vaseline on the lips. If the symptoms still persist then get an evaluation done and get pyogenic granuloma ruled out.
I hope it helps. Take care and regards
I guess that since it is on your lip it keeps cracking open. If it was on MY lip, I'd use some good chap stick, maybe one with all natural ingredients in it.
Now, that being said, since it is on you lip, and lips are close to your lymph nodes...IF you have a fever, have any foul smelling drainage from the wound area, or if the drainage is green, yellow, or any color beside clear...go see
your MD. Don't put it off.