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 2018 are citrus and warm spicy. It opens with Citruses and Lemon, reveals Praline and Cinnamon at its heart, and dries down to Patchouli and Black Amber. It lasts a moderate time and projects moderately; people reach for it in autumn and winter, day or night.
How a perfume unfolds →