Lanolin waa dufan dhogorta ah oo ay soo daayaan qanjidhada sebaceous idaha, waxayna ka dhigan tahay isku dhafka kakan ee dufanka tirada badan ee kellika ah, oo ay ku jiraan asiidh dufan iyo alkohol, sterols, hydroxyacids, diols,aliphatic iyo steryl esters.