 Medical grade (USP) lanolin accelerates repair of the lips, and is used in some lip repair products.Sometimes the term "cheilitis simplex" is used as a synonym for cheilitis generally, however, exfoliative cheilitis (discussed later) is also sometimes stated to be the equivalent of chapped lips.Also termed "solar cheilosis", this condition is the result of chronic over-exposure to ultraviolet radiation in sunlight.