Please choose the correct ending to complete the given sentence: Health: [header] How to have healthy lips [title] Avoid licking your lips. [step] When you lick your lips it is usually in an attempt to moisturize them. However, saliva will actually just dry them out.

Ending1: Licking your lips is a natural thing to do, especially when they are dry, not chapped. You can help prevent dryness by blowing cool air on them. Ending2: In fact, not only does it dry out the surface, it also creates a lot of damaging friction on the lips. [substeps] It can be hard to stop licking your lips when you do it subconsciously. Ending3: Your lips are going to dry out if you just lick them. [substeps] This can happen after brushing your lips, when your lips are still damp from eating. Ending4: You will need to do a little research before you start doing this. You can, however, try to do something like wait a few minutes after eating before licking your lips.

Answer format: ending1/ending2/ending3/ending4