[Pomade crust of the scalp simulating cornu cutaneum].

A 63-year-old woman with a history of exaggerated use of topical skin care products of post-traumatic scarring alopecia presented with a monstrous cutaneous horn-like pomade crust of the scalp hidden beneath a wig. The crust consisted of corneocytes and bacterial debris. Pomade crusts have not been described previously in this localization. They are usually found in the inguinal or gluteal folds of infants, and occasionally in other body regions, e.g., on the face of adults.