Similarity is based on note and accord overlap, not molecular analysis.
Differences come from accords and community votes on longevity and sillage.
The main accords of Valentino Donna Born in Roma Ivory are sweet and powdery. It opens with Green Mandarin, reveals Orange Blossom and Marshmallow at its heart, and dries down to Musk and Madagascar Vanilla. It lasts a moderate time and projects moderately; people reach for it in spring and autumn, mostly by day.
How a perfume unfolds →