1.Indigo naturalis,indigo dye 2.Indigo 2%, 3%,4%, indirubin 0.3%, 0.5%,0.8%; 3.natural blue colorants; 4.to treat Psoriasis Model No.:CHE-064Product NameIndigo naturalis, indigo dyeUsed PartLeafLatin Name Baphicacanthi CusiaeActive IngredientsIndigo, indirubinSpecificationsIndigo Blue 2%, 3%,4%, indirubin 0.3%, 0.5%,0.8%CharacteristicsGrey blue or dark blue fine powder; light and easily fly ...