How can i cure a lip blister/swollen lip?

Ice for one option: If the lip is swollen, ice would help. 10 min. On and 10 min. Off and repeat. Also there are several over- the-counter medications which could help. Ask your dentist to recommend specific brands or speak to the pharmacist.

Swollen lip: If the swelling if form trauma then ice all help. If this is a blister, viral , or abscess then this should be evaluated by a dentist.