The man attracted officers' attention because he was “considerably nervous” and his wig was of “disproportionate size”, police said in a statement.
Officers questioned the man and found a “perfectly-sealed package taped to his head”. It contained 503 grammes (1.1 pounds) of cocaine worth over €30,000 ($34,000).
In what police have dubbed “Operation Toupee”, the man was arrested at Barcelona's El Prat airport, Spain's second busiest, after arriving on a flight from Bogota at the end of June.
La Policía Nacional ha detenido a un hombre en el Aeropuerto de El Prat (Barcelona), procedente de Bogotá, que ocultaba medio kilo de cocaína en el doble fondo de su peluquínhttps://t.co/4nCT2UsfWM pic.twitter.com/Piih73Ei16
— EFE Noticias (@EFEnoticias) July 16, 2019
Spain, with its historic and linguistic links to South America, is an important gateway for cocaine to Europe, mainly from Colombia.
Smugglers often resort to creative methods to get drugs past Spanish customs.
In recent years, police have found cocaine inside breast implants, hollowed-out pineapples, a wheelchair cushion, a plaster cast encasing a man's broken leg, and a 42-piece crockery set.