[header] How to heal sunburned lips [title] Apply aloe to your lips. [step] Use fresh aloe juice from a cut leaf of the plant, or buy a commercial aloe gel. Smear some of the juice or gel onto your sunburned lips, and let it dry. 
You should feel some cool relief, and the aloe will also help to heal the burn. [substeps] You can purchase aloe leaves from the produce section of some grocery stores, if you don't have a plant at home.