Cold sores form clusters of fluid-filled blisters that often burst and ooze. Pimples on the lip line are red bumps with whiteheads, not blisters. Cold sores are contagious, but pimples are not. Cold ...

Washing your face twice a day with a gentle cleanser can help prevent lip pimples. Avoid popping lip pimples to reduce the risk of infection and larger pimples. Antibiotics can help treat lip pimples ...