Immortelle, also known as Helichrysum italicum or everlasting flower, is a plant native to the Mediterranean region. In perfumery, the aromatic flowers are used to create a rich, warm, and slightly sweet note. Immortelle is often featured in oriental, woody, and floral compositions, contributing a unique, golden warmth and an intriguing complexity to fragrances.

Immortelle has a rich, honeyed, and slightly herbal aroma with warm, balsamic undertones. Its scent is complex, featuring hints of maple syrup, curry-like spices, and dry, hay-like nuances. The sweet and slightly smoky character of immortelle adds depth and richness to perfumes, creating a distinctive and long-lasting profile that enhances the warmth and complexity of fragrances.