Orris root derives from the rhizomes of Iris species, such as Iris germanica, Iris florentina, and Iris pallida. It undergoes extensive processing—typically drying and aging for several years—to develop its characteristic fragrance and properties. The resultant powdered root is highly valued in perfumery and traditional medicine.
The scent profile of orris root is distinctively floral and woody, with a rich, violet-like aroma. It also carries subtle earthy and powdery nuances that can add depth and complexity to fragrances. The compound primarily responsible for its unique fragrance is irones, which develop in the root over the drying process. Orris root's aroma is often described as warm, starchy, and reminiscent of violets, making it a luxurious addition to many premium perfumes. It acts as a fixative, helping to stabilize other volatile perfume ingredients and thereby prolonging the scent's longevity on the skin.