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 Black XS for Her Eau de Parfum are fruity and cacao. It opens with Cranberry and Pink Pepper, reveals Cacao and Rose at its heart, and dries down to Black Vanilla Husk and Sandalwood. It lasts a moderate time and projects moderately; people reach for it in autumn and winter, mostly in the evening.
How a perfume unfolds →