Petroleum jelly or petrolatum is made by the waxy petroleum material that is formed on oil rigs. It is an ingredient in many cosmetics and lotions. Originally it was marketed as a burn ointment. While petroleum jelly does not cure burns or other wounds, it does seal a cleaned burn or injury off from contamination or further infection. Petroleum jelly also may be applied to dry or chapped skin to seal in moisture. A variation known as red veterinary petroleum confers some protection against UV (ultraviolet) exposure and has been used as a sunscreen.