Some people swear by petroleum jelly as their go-to lip balm. But the derivative from oil refining does not actively nourish the skin, but rather seals the lips so moisture does not escape. And as moisture cannot get out, air and moisture cannot get in meaning it can dry your lips.
If you are not allergic, Vaseline is not likely to cause harm or make your lips drier, it just may not be the best option for hydrating lips and preventing the delicate skin from becoming chapped.
A better option would be to use an organic lip balm with ingredients such as beeswax, cocoa butter, Vitamin C and Vitamin E.
are also cruelty-free and eco-friendly, and contain fewer ingredients, which is better for both your lips and the environment.