Please choose the correct ending to complete the given sentence: Health: [header] How to prevent dry chapped lips [title] Use lip balm. [step] Apply a lip balm to promote healing and prevent chapped lips. Lip balm also helps to seal in moisture and protect your lips from outside irritations.

Ending1: [substeps] To prevent chapped lips, use a lip balm that contains high concentrations of sugar in it. Gargle the lip balm two times a day for best results. Ending2: [substeps] Lip balms with cooled base (a oral variety of lip balm) or lip balm half (a lip balm in a moisturizing form) are available at most pharmacies. Follow the instructions on the product and apply the balm in a short, fluid motion. Ending3: Dry lips can easily become chapped from dry lip balm, so choose a lip balm that is one or two times more effective. [title] Use lip balm sparingly. Ending4: [substeps] Apply lip balm every hour or two to treat dry lips and to keep them healthy. Use balm with spf of at least 16 to save your lips from sun damage.

Answer format: ending1/ending2/ending3/ending4