Petrolatum, a semi-solid mixture of hydrocarbons, also known as petroleum jelly, has several synonyms that are commonly used in the cosmetic, pharmaceutical and industrial sectors. One such synonym is mineral oil jelly, which is derived from petroleum and consists primarily of paraffin and microcrystalline wax. Another synonym for petrolatum is white petroleum, which is a highly refined mineral oil that is odorless and colorless. Other synonyms for petrolatum include soft paraffin, petroleum wax, and paraffinum liquidum. These terms refer to the various forms of petroleum jelly that are used as a lubricant, moisturizer, and barrier to protect the skin from dryness, chapping and irritation.