Vaseline is a brand name for petroleum jelly, which is 100% petroleum jelly. It is known as an occlusive, which means it can lock in moisture, but it may not be the best choice for chapped lips. Vaseline is safe to use on skin and lips, and it is non-comedogenic, meaning it wont clog your pores. However, there are some negative aspects to consider. Vaseline is a by-product of petroleum, a fossil fuel, so it’s not very eco-friendly. Allergic reactions to Vaseline are rare, though they can occur, and if your lips are chapped to the point of bleeding, Vaseline that’s been contaminated with bacteria from your fingers could cause an allergic reaction. Additionally, Vaseline may clog pores around the mouth. If you’re not allergic, Vaseline isn’t likely to cause harm or make your lips drier, but it just may not be the best option for hydrating lips and preventing the delicate skin from becoming chapped. Other things to try for dry lips include lip balms that contain moisturizing ingredients like shea butter and vitamin E, and avoiding irritating ingredients that can cause dryness, like cinnamon, menthol, and salicylic acid. Vaseline Lip Therapy Original Tin is a product that is clinically proven to help heal dry lips and is made with Vaseline Jelly, shea butter, and tocopheryl acetate.