Is Sprite or 7-up your favorite soda? Then you may want to try to make this recipe for Lemon Lime Lip Balm from Bonnie Bath Company. Erica kindly shares this recipe on her blog Bath Alchemy.
Just remember that citrus essential oils are photosensitive which can cause rashes or sunburn on your skin if you are not careful. Since your lips have the thinnest skin on your body, I would not recommend wearing this balm outside.